G-Shock Square Showdown: DW-5600UE-1 vs DW-5600BB-1 vs GMW-B5000TB – Which Iconic “Square” Reigns Supreme?

Few watches are as enduring and recognizable as the Casio G-Shock “square” – the digital tough watch that won the battle against the laws of nature nearly 40 years ago fratellowatches.com. In this report, we pit three current variants of the classic square G-Shock against each other: the DW-5600UE-1, DW-5600BB-1, and the GMW-B5000TB. These models span from affordable resin classics to a premium titanium limited edition. We’ll compare their features, materials, build quality, durability, water resistance, modules, backlights, comfort, and more in a detailed side-by-side analysis. You’ll also find expert insights, real user reviews, pricing and availability info, collector value trends, and a peek at upcoming releases in the DW-5600 and GMW-B5000 families. Let’s dive into this G-Shock square face-off and see which of these rugged timepieces best suits your needs (and wants)!

Model Comparison Overview

To set the stage, here’s a quick side-by-side comparison of key specifications for the three models:

Table: Key specs for DW-5600UE-1, DW-5600BB-1, and GMW-B5000TB. Each model carries the core G-Shock DNA (200m water resistance and shock-proof build), but they differ greatly in materials, technology, and price. Below, we break down each aspect in depth.

Design & Build Quality

DW-5600UE-1: The DW-5600UE is essentially a modernized take on the classic G-Shock square design. It retains the iconic form of the original 1980s DW-5000/DW-5600 line – a no-nonsense rectangular case with four corner screws and a protective bezel casio.com. The case and band are made of tough black resin, keeping it lightweight and comfortable (52 g) casio.com. Casio gave the UE a resin case back plate secured by 4 screws (standard for modern 5600s) and the familiar “G-SHOCK” and “PROTECTION” text on the bezel. Overall build quality is rock-solid for the price; the resin bezel and raised lips around the crystal do a great job protecting the mineral glass from impacts bladereviews.com. Owners report that these basic 5600s “survive nearly everything” in daily wear hodinky-365.com. In fact, the fundamental design is so robust that the DW-5600 (and its predecessors) were officially certified by NASA for space flight and used aboard Space Shuttles g-central.com – a testament to its build quality and durability.

DW-5600BB-1: The DW-5600BB (stands for “Blackout” edition) shares the same resin construction and dimensions as the standard 5600 (48.9×42.8×13.4 mm) casio.com. It’s essentially a stealth-style version: all exterior surfaces – the case, bezel, strap, even the G-Shock logo – are rendered in matte black. The dial uses a negative LCD (light gray digits on a dark background) for that ultra-stealth look. In terms of build, it’s the same hardy resin unit under the paint, with a stainless steel screw-back plate. Weighing around 53–60 g, it’s as light and comfortable as the UE amazon.com. The minimal branding and monochromatic scheme give the BB a sleek, tactical aesthetic that many love. However, the lack of contrast and blacked-out text around the dial (no color accents at all) means legibility is sacrificed for style – more on that in the Backlight & Display section. Build quality remains on par with other 5600s: tough and utilitarian. The BB doesn’t feel flimsy in any way; one user noted it is “super solid feeling, as you’d expect of a G-Shock” reddit.com. In short, the DW-5600BB-1 is a pure blacked-out variant of the classic – equally durable, with a design that trades readability for a cool stealth factor.

GMW-B5000TB: The GMW-B5000TB takes the familiar square form and elevates it to a luxury level. Inheriting the DNA of the original 1983 DW-5000C, it replaces resin with premium metal in almost every component casio.com. The case, bezel, case back, and bracelet are all crafted from lightweight titanium, making it 57 grams lighter than equivalent steel models (about 110 g vs 167 g in steel) g-central.com. Titanium is notoriously difficult to machine, so Casio’s achievement here is significant casio.com. To enhance durability, all outer surfaces have a hardened diamond-like carbon (DLC) coating, giving the watch a matte black finish that resists scratches and scuffs casio.com. The GMW-B5000TB is also the first G-Shock square to feature a sapphire crystal, which is far more scratch-resistant than the mineral glass on the resin models g-central.com. The attention to detail in build quality is evident: the case back is a screw-lock type (like high-end divers), the pushers and screws are gold-toned titanium (adding contrast and echoing the vintage 5000C-1B colorway) watchdavid.com, and the overall finishing is premium. Reviewers have described the TB’s build as “phenomenal” for a G-Shock, some even crowning it “the undisputed king of the G-Shock squares” in terms of materials and execution youtube.com. On the wrist, it feels solid yet remarkably light – “the lightness of the G-Shock is a pure luxury feeling in everyday life” thanks to titanium watchdavid.com. In short, the GMW-B5000TB offers top-tier build quality: it’s a true metal luxury G-Shock that doesn’t sacrifice the toughness G-Shocks are known for.

Features & Technology (Modules)

Despite sharing a common ancestor, these three models have very different feature sets under the hood. The “module” number indicates the movement/technology inside each watch, and it greatly affects functionality:

• DW-5600UE-1 – Updated Module 3525: This model was introduced as an upgrade to the long-running DW-5600E. Casio equipped it with module 3525, bringing a few modern enhancements. The core timekeeping functions remain classic: a 1/100-second stopwatch (measures up to 24 hours), a 24-hour countdown timer (now settable to the second, with auto-repeat) casio.com watchia.com, an hourly time signal, and a multi-function alarm (you can set it as a daily alarm or one-time date alarm, etc.) watchia.com. The calendar is full auto (pre-programmed to 2099) and the watch can display time in 12 or 24 hour format casio.com. The big improvements in the “U” edition are the backlight and battery life: module 3525 uses an LED backlight instead of the old electroluminescent panel g-central.com. This not only gives a brighter illumination (Casio calls it a “Super Illuminator” LED) but also extends battery life to ~5 years on a CR2016 cell g-central.com – significantly better than the ~2 years of the previous module, despite the same battery type. Another new addition is a Flash Alert feature: the display can flash alongside the buzzer for alarms or countdown timer alerts casio.com watchia.com. Essentially, the DW-5600UE offers the classic G-Shock features with a few 21st-century upgrades (brighter LED light, longer life, and flash alert). It’s worth noting that it remains a battery-powered (non-solar) model and does not have radio-sync or Bluetooth – keeping things simple and power-efficient.
• DW-5600BB-1 – Module 3229: The DW-5600BB uses the older module 3229, which is the same specification that the DW-5600E had for decades. Feature-wise, it’s almost identical to the DW-5600UE’s basics: you get a 1/100-second chronograph (stopwatch) up to 24 hours, a countdown timer (24h max, settable to 1-minute increments on this older module), an hourly chime, and a single alarm (officially “multi-function” alarm, meaning you can choose daily, date, etc., but only one can be active at a time) watchia.com. It tells time, day, and date with ±15 seconds/month accuracy buywatchesonline.com.au – straightforward and dependable quartz performance. The BB’s module crucially uses the traditional EL (electroluminescent) backlight panel, which gives the whole display a greenish-blue glow at the press of a button bladereviews.com. This was state-of-the-art for 1990s G-Shocks, though it’s dimmer by modern standards. The older tech also means a shorter battery life: about 2 years on a CR2016 with normal use buywatchesonline.com.au. (In practice, some users report 3+ years if you use the light sparingly bladereviews.com.) The BB’s feature set does not include any radio time calibration, solar charging, or connectivity – it’s intentionally basic, in line with the G-Shock ethos of “things that absolutely need to work, always work.” This simplicity is part of its appeal: as one review put it, “it has everything I need and nothing I don’t” in a tough watch bladereviews.com. To summarize, the DW-5600BB-1’s module offers reliable, no-frills timekeeping and timing functions. It’s essentially the same tech that made the DW-5600E a classic, just packaged in the BB’s stylish all-black attire.
• GMW-B5000TB – Module 3459 (Advanced Features): Here’s where things get really interesting. The GMW-B5000TB is not just a pretty metal face – it’s loaded with Casio’s latest technology for digital G-Shocks (as of its 2019 release). Module 3459 (very similar to the one in the GMW-B5000D series) brings Tough Solar power, Multi-Band 6 atomic timekeeping, and Bluetooth smartphone connectivity – on top of all the usual functions of a 5600 casio.com casio.com. In terms of timekeeping, the TB can synchronize with atomic clock radio signals (six transmitters worldwide) for daily automatic calibration, ensuring near-perfect accuracy casio.com. If you’re out of range, it still keeps quartz time to ±15 sec/month, and the Bluetooth link can sync it to your phone’s time as well. The watch has World Time with 39 time zones (selectable city codes) casio.com – a feature absent on the simpler 5600s. You also get a full auto calendar to 2099, 12/24-hr format, and an option to have the backlight come on automatically when you tilt your wrist casio.com. The stopwatch and countdown timer on the TB are similar in capacity (24h timer, 1/100s stopwatch) but the module likely allows setting the timer to the second as well. Notably, the GMW-B5000TB offers 5 daily alarms + 1 snooze alarm – a big step up from the single alarm on the other models casio.com. It also features power-saving functions (the display can auto-blank to save power in the dark) and a battery level indicator, courtesy of the solar charging system. Using the Casio Watches app via Bluetooth, you can adjust settings (set world time city, alarms, etc.) and even sync the time or find your phone. In short, the GMW-B5000TB is a feature-packed modern G-Shock: it merges the classic look with high-tech internals. You pay a premium for these features, but they significantly expand the watch’s capabilities beyond the basic timing functions of the DW-5600 models. As one fan site quipped, Casio “upped its game” with the full-metal GMW-B5000, taking the square into a more “definitive path” with solar, radio, and Bluetooth tech fratellowatches.com fratellowatches.com. If you want the ultimate functionality in a square G-Shock, the GMW-B5000TB (and its kin) clearly leads the pack.

Summary: The DW-5600UE and BB keep things simple and reliable – great for those who just need a basic indestructible watch with a stopwatch and alarm. The UE edges out the BB in tech by virtue of its updated LED module and longer battery life g-central.com. On the other hand, the GMW-B5000TB is in an entirely different league, offering almost “smartwatch” levels of functionality (minus a display of notifications) while still being a bombproof G-Shock at heart. Depending on whether you want pure simplicity or cutting-edge features in your G-Shock, this trio covers the spectrum.

Backlight & Display Performance

One of the most noticeable differences in daily use between these models is the display type and backlight – essentially, how easy they are to read in various conditions:

• DW-5600UE-1 (Positive LCD, LED backlight): The UE model has a standard (positive) LCD display – dark digits on a light gray background – which is generally very legible in normal lighting. Casio improved the illumination by swapping the old electroluminescent panel for a modern LED Super Illuminator on this model g-central.com. Pressing the light button activates a white LED that brightly lights up the entire display from the side/bottom, with an afterglow that can be set to 2 seconds or 4 seconds casio.com. This LED is much brighter than the faint teal glow of older 5600s; it makes the digits easy to read even in pitch dark. The UE also includes a Flash Alert feature – when an alarm or the timer is up, the backlight flashes in sync with the beeping casio.com. This can be handy in loud environments where you might miss the beep. In darkness, the UE is clearly superior to the BB variant, thanks to both the positive display (more contrast under the LED) and the sheer brightness of the LED lamp. Users describe the new LED as a big upgrade, making the watch “easy to see in darkness,” as Casio advertises casio.com. Bottom line: the DW-5600UE gives you the best nighttime visibility among the resin models, without sacrificing daytime legibility.
• DW-5600BB-1 (Negative LCD, EL backlight): The BB’s “negative” LCD is a double-edged sword. Aesthetically, it looks awesome – the dark screen perfectly fits the blacked-out theme, giving a very sleek, covert ops vibe. However, by nature, negative displays offer lower contrast than positive ones. In moderate or low ambient light, the gray digits can be hard to read against the dark background. Several owners have noted this drawback. One user said “I found it very difficult to tell the time because of the negative display” reddit.com, and another mentioned it was “too hard to read under low light … I didn’t want to be constantly using the backlight” reddit.com. Indeed, you might find yourself pressing that light button often. The backlight on the BB is an Electroluminescent panel (with a blue-green glow) which uniformly lights the whole display, including a nifty outline of the display text if any (in the case of special editions, sometimes a logo appears – e.g., the NASA edition had a moon graphic on the EL panel g-central.com). While charmingly retro, the EL is dimmer than an LED; if your eyes are adapted to darkness it’s readable, but next to the UE’s LED it’s no contest. The EL also tends to wash out negative LCDs a bit, making digits a light gray on a glowing green background – still not high contrast. In bright daylight, ironically, the BB’s negative display is usable (it actually excels in very bright sun where the contrast improves), but in mixed indoor lighting it can be a struggle. In summary, the DW-5600BB-1 prioritizes looks over legibility. Many owners are happy to live with that (“gorgeous watch… got a lot of compliments” one user raved reddit.com, saying the style was worth the minor drawbacks), but it’s something to consider. If readability is critical to you, the BB might disappoint – or you might consider waiting for a rumored updated “UBB” version that could improve the display (Casio has released an updated DW-5600UBB-1 in some regions with an STN LCD that offers better viewing angles/contrast, improving night visibility reddit.com, although as of early 2025 it wasn’t officially in the U.S. lineup g-central.com).
• GMW-B5000TB (STN LCD, LED backlight): The GMW-B5000TB uses a high-contrast STN LCD display. Casio doesn’t heavily advertise this, but enthusiasts will note that the full-metal squares come with either a super-twisted nematic (STN) LCD for improved viewing angles and clarity. In the TB’s case, the display is a positive LCD with black digits on a lighter background, surrounded by a black/gold printed dial ring. It’s very legible in most conditions. (The sister camo model TCM-1 used a negative STN LCD g-central.com, but the TB-1 is the standard positive display.) The digits appear a bit more crisp compared to older 5600s, likely due to the STN tech. Of course, the TB also features a Super Illuminator white LED backlight, just like the UE, but with an added bonus: it has a Fully Automatic function casio.com. That means you can set the watch such that a tilt of your wrist in the dark will trigger the LED for a couple of seconds – great for hands-full situations. You can also select 2-second or 4-second illumination duration. Thanks to the STN LCD, the viewing angle is better – you don’t have to look dead-on to read it, even under the LED glow. Everything about the TB’s display is aimed at usability. Even the day/date segments are a bit easier to read. There’s also a sharpness to the LCD readout that befits its premium status. In practice, owners of the GMW-B5000 series have been very pleased with the display; the consensus is it’s as easy to read as any G-Shock gets, day or night. The auto-light feature is a fan favorite, since you rarely need to press a button. In summary, the GMW-B5000TB provides the best overall display experience here – combining the high contrast of a positive STN LCD with a bright LED backlight (and convenience features like auto illumination). It doesn’t have the aesthetic cool factor of an all-black negative display, but it’s highly functional, which suits the watch’s “premium tool” character.

Comparative verdict: If we rank these on visibility: GMW-B5000TB comes out on top, closely followed by the DW-5600UE (which only lacks the wide-angle STN screen, but is still excellent with its LED). The DW-5600BB trails in third – perfectly readable in good light or direct sun, but under many real-world conditions it requires a deliberate glance or using the backlight. Many BB owners ultimately accept this trade-off; a few have sold the watch because of it reddit.com reddit.com. So, know thy eyes and use-case: the BB is for style-oriented folks who don’t mind a quick button press to see the time at night, whereas the UE and TB are more about effortless readability at any time.

Comfort & Wearability

One of the joys of the G-Shock square series has always been how wearable they are, even for a rugged watch. All three of these models maintain the classic case size (~43mm across) that sits well on most wrists, but their weights and materials make for different wearing experiences:

• DW-5600UE-1: On the wrist, the UE feels nearly identical to the old DW-5600E – which is to say, extremely comfortable. At ~52 grams, you often forget you’re even wearing a watch bladereviews.com watchdavid.com. The resin strap is flexible and has plenty of adjustment holes to get a good fit. One reviewer noted that adjusting for a perfect fit is easy due to the strap, and that the watch is “fantastically comfortable… lightweight … it does fit underneath a dress shirt cuff” if needed bladereviews.com bladereviews.com. The relatively slim profile (13.4 mm thick) means it’s not overly bulky. This is a watch you can wear to bed, in the shower, during sports – it won’t get in your way. The resin’s slight cushioning also means it doesn’t create pressure points. The UE’s comfort is essentially the baseline of what made G-Shock squares popular: you get toughness without much heft or discomfort.
• DW-5600BB-1: The BB being the same dimensions and material as the UE, one would expect identical comfort – and largely that’s true. It’s lightweight and straps on easily. However, a few wearers have reported a particular quirk: the matte black resin strap (especially if it’s a newer bio-based resin as some listings indicate duewest.ca) can either be slightly stiffer or the fit can feel a touch different. One user mentioned “the band around my wrist was always either too tight or too loose” reddit.com – suggesting they couldn’t get a perfect fit with the strap holes. This can happen if your wrist is in-between hole positions. It’s a very personal thing, and not unique to the BB model. Generally, most people find the 5600 strap design comfortable, but if you have an issue, third-party straps or adapters are an option (some enthusiasts swap in NATO straps or use Casio’s combi-bracelet from other models for a different feel). Aside from that, the BB’s presence is just as undemanding as the UE’s: it’s a strap-it-and-forget-it kind of watch. The low weight and smooth resin mean it won’t snag or irritate. Unless you’re extremely sensitive to the strap fit or you strongly prefer a metal bracelet feel, the BB is daily-wear comfortable for most. And if you want to maximize comfort and stealth, note that some newer production runs might use bio-derived resin which Casio has been rolling out – supposedly just as durable, but slightly better for the environment duewest.ca.
• GMW-B5000TB: Intuitively, one might think a full-metal watch would be less comfortable than a resin G-Shock, but the use of titanium flips the script. The GMW-B5000TB weighs about 110 g casio.com – roughly double the resin models, but for a solid metal watch with bracelet, that’s actually very light. For comparison, the stainless steel GMW-B5000D is 167 g and feels much heftier on the wrist g-central.com. The TB’s titanium construction makes it 57 grams lighter than the steel version, which owners definitely notice g-central.com. One reviewer remarked that upon unboxing the watch, “one thing is immediately apparent… the watch is incredibly light!” for its size watchdavid.com. This lightness gives the TB a unique wearing experience: you get the premium tactile feel of metal, but without the typical weight penalty. The bracelet design is a solid link titanium bracelet with a one-touch 3-fold clasp casio.com. It drapes well and doesn’t pinch. Titanium also has the advantage of being hypoallergenic (no nickel) and it doesn’t feel as cold or hot as steel against the skin, adjusting quicker to body temperature. Over long durations, the TB is comfortable – perhaps more comfortable than a heavy steel watch, but a tad less “invisible” than a 50g resin model. As one watch blogger humorously put it, you can wear the titanium square without getting “arm pump” – unlike the heavier steel ones thetruthaboutwatches.com. The case is still only ~13mm thick and 43mm wide, so it doesn’t overhang the wrist. Unless you have a preference for ultra-light watches, the TB strikes an excellent balance of substance and comfort. People with very small wrists might still lean toward the resin squares (since metal bracelets don’t cinch as tightly as straps), but for most, the TB wears like a dream. It “stays true to Casio’s successful line” – meaning it doesn’t feel like a gigantic luxury watch; it’s still an easy-wearing G-Shock at heart watchdavid.com. In fact, the relative rarity of titanium in watches at this price means it might spoil you – many note that going back to heavier watches is hard after experiencing the TB’s featheriness. To sum up: the GMW-B5000TB is remarkably comfortable for a full-metal watch, offering a “best of both worlds” scenario (robust bracelet feel yet lightweight on the wrist).

All three models are robustly built for active wear, so comfort in scenarios like sports, outdoor activities, or long-term use is generally great. The resin models might have a slight edge in absolute lightness and snug fit for high-impact activities (plus you won’t worry about scratching them as much), whereas the TB gives you that upscale feel without a huge comfort trade-off. If comfort is your top priority, it’s hard to beat the resin squares – they’re famous for it – but the TB proves even a luxury G-Shock can be an everyday wearer.

Durability & Toughness

When it comes to sheer toughness, all three of these watches carry the legendary G-Shock DNA of durability – but let’s explore any differences:

• Shock Resistance: All G-Shocks are built around Kikuo Ibe’s concept of a “floating module” suspended in a tough case to withstand drops. These models are no exception – each is officially Shock Resistant per Casio’s standards casio.com. That said, the resin DW-5600 models have an inherent advantage in shrugging off cosmetic damage. The resin bezel acts like a bumper; it can get scratched or gouged, but it won’t dent. You can even replace the bezel relatively cheaply if it gets very beat up. The DW-5600UE and BB can survive unbelievable abuse – it’s not just marketing. Owners have stories of these watches falling off bikes, being knocked around in construction work, even run over by vehicles, and still functioning (often with just minor scratches). As one long-term user put it: “I have beat on this watch for years without a second thought… It hasn’t failed me yet – the shock resistance Casio advertises is no joke.” bladereviews.com. In terms of internal protection, the UE and BB share the same module mounting and case design, so expect similar resilience. The GMW-B5000TB, with its metal construction, is also extremely tough – Casio didn’t ditch durability when going metal. The internal module is cushioned by fine resin components inside the titanium case instagram.com (the G-Shock website notes it retains a resin buffer even in the metal models). The big difference is the metal vs. resin exterior: a severe impact that might gouge a resin bezel could dent or scratch the titanium. The DLC coating helps a lot against minor scuffs casio.com, but a hard knock could leave a mark on the finish or bend a link. However, barring cosmetic damage, the TB is as robust as they come – it’s still a G-Shock. In fact, some consider it arguably tougher in some ways: titanium can handle heat/cold extremes and won’t crack like resin might after decades watchdavid.com. If you somehow chip the sapphire crystal on the TB (unlikely short of a diamond strike), it’s done its job protecting the display better than the mineral crystals on the resin models, which can scratch or crack (though the resin bezel usually prevents direct hits on the crystal bladereviews.com). In practice, any of these watches can take daily knocks, vibration, and drops that would kill normal watches. Unless you’re doing something highly unusual (like extremely high-G impacts), all three have over-engineered shock protection for civilian needs.
• Water Resistance: All three carry a 200-meter water resistance rating casio.com casio.com. That means you can swim, surf, snorkel, even scuba dive recreationally with them. The rating (20 Bar) is standardized across most G-Shocks and is a hallmark of the series since the beginning. In real terms, users regularly take 5600s diving to shallow depths (~30m or so) without issues, and the watches laugh it off. The DW-5600UE and BB use a screw-back plate with a gasket and 4 screws, a proven design that keeps water out as long as the O-ring gasket is intact and screws are tightened evenly. (Some divers do prefer screw-lock backs for extra assurance, but plenty of G-Shocks with 4-screw backs have survived tough environments.) The GMW-B5000TB has a screw-lock case back (like a traditional diver’s watch back) casio.com, which if anything provides an even more secure seal. There’s no functional difference in water resistance for average users – all will handle immersion well. One minor consideration: the age of seals. The BB being older stock (if it’s been sitting since 2012 in some cases) might have an older gasket, but Casio’s rubber gaskets usually last many years before any degradation. Still, if you get a decade-old BB new-old-stock, a gasket replacement might be wise for heavy water use. Meanwhile, the TB’s gasket, although only a few years old, might need eventual replacement too – but likely all are fine as of now. Another point: corrosion and saltwater. The resin models have virtually no external metal (just tiny screws) that can corrode; just rinse after salt exposure. The TB’s titanium is highly corrosion-resistant (titanium is used in marine applications often), and its screws/pins likely stainless steel. So all are suited for marine use. Essentially, from washing dishes to surfing to diving, any of these watches can be your companion. They exceed the needs of most users in water durability – Casio even famously demonstrated G-Shocks surviving in washing machines and frozen in ice. You can be confident the 200m rating is not just for show watchia.com.
• Longevity and Hardiness: G-Shocks are known to last decades. The main wear points on the DW-5600UE/BB will be the resin parts – the bezel and strap can eventually degrade (UV light, sweat, and age can cause resin to harden or crack after ~10-15+ years). They are replaceable, and with care (rinsing off sweat, etc.), they last a long time. The BB’s black coating on the text can wear off with abrasion, but that’s cosmetic. The module electronics in the resin models are very low-power and tend to run until the battery dies, and even beyond if replaced. We’ve seen 20-year-old DW-5600Cs and Es still ticking. The DW-5600UE’s module is new, but no reason to suspect less durability – if anything, it should be better with its LED (EL panels can eventually dim after 15-20 years). The GMW-B5000TB’s titanium build means no worries about case rot or broken lugs (older resin G-Shocks sometimes suffer cracked lugs after severe use or if the resin dries out over decades). Titanium itself will basically last indefinitely except for cosmetic scratches. The DLC should keep it looking good for a long time; if it does scratch through, raw titanium underneath oxidizes to a dull gray that actually blends in, and it won’t rust. The solar rechargeable battery in the TB (a small CTL1616 cell) typically lasts 10-15 years before capacity drops significantly. So in the very long run, the TB might need a battery swap (which is an involved but doable procedure) or a new capacitor cell, whereas the DW-5600UE/BB will just need new disposable batteries every few years. Both have their maintenance aspects. One could argue the TB is more self-sufficient (no battery changes for many years, charges itself), but eventually its cell might need service. The resin models need a battery every 2-5 years (which is an easy DIY or $5 at a jeweler task) – some see that as a downside, others as a non-issue. In extreme environments (think high impact or certain military uses), some prefer battery models because they don’t worry about solar charging; others prefer solar so they don’t lose function if they forget to change a battery. It really depends on use case, but both systems are very proven in G-Shocks.

Real-world torture: It’s worth noting that the G-Shock square design has literally been to war, space, and survived things like being strapped to rockets. The DW-5600 has a track record in military circles as a cheap watch that just doesn’t quit. The DW-5600E (the UE’s predecessor) is even listed as “crew preferred” in NASA’s space missions, often used by astronauts to time tasks g-central.com. The GMW-B5000TB, being a pricier piece, might not be subjected to the same abuse by owners (you’re less likely to intentionally trash a $1500 watch), but it is fundamentally built to the same toughness standards, if not higher. In G-Central’s words, the titanium squares combine “unique origin… with sapphire crystal” but some initially “scorned [them] for their high prices”, not their durability g-central.com – meaning even detractors weren’t questioning the toughness, just the cost. After release, many who bought them ended up using them daily because they can handle it.

Verdict on durability: There is no “weak” option here – all three are true G-Shocks in toughness. The DW-5600UE and BB have the edge in that you can thrash them without worrying about cosmetic damage (and if you do, you’re out $100, not a fortune). The GMW-B5000TB is equally resilient internally and waterproof, but you might cry if you put a big dent in that beautiful DLC titanium. Nonetheless, it’s built to be worn and used; it’s not a desk diver. For most people, the resin models offer bulletproof durability in a more disposable package, whereas the TB offers that durability with luxury – you’ll just want to take a bit more care due to its value. If you’re a collector keeping the TB pristine, durability is a moot point, but if you’re an adventurer, rest assured it’s up to the task. As one TB owner on Reddit proclaimed after some months of wear: “It is the strongest square G-Shock. My favorite in my collection. Full titanium, sapphire glass… I bought it to wear, and it’s holding up great.” reddit.com.

Pricing & Availability (2025)

Price is a major differentiator among these models – they span from entry-level to high-end. Here’s the breakdown of what you can expect to pay and the current availability:

• DW-5600UE-1 (Approx. $99 MSRP): The DW-5600UE-1 is positioned as the new standard “classic” G-Shock square. In the U.S., Casio lists it essentially under the DW-5600E product page, with the updated specs. The official retail price jumped to around $99.95 (USD) when the module was upgraded g-central.com. This is a bit higher than the older DW-5600E-1V, which used to list around $70-75 (and often sold for ~$40-50 street price). The upgrade in module and inflation seem to have pushed it near the $100 mark. As of 2025, the DW-5600UE-1 is widely available at G-Shock retailers, Casio’s online store, and Amazon. In fact, many retailers simply stock it as “DW-5600E” or don’t distinguish the module – so you might get the UE even if the listing says E. (G-Central noted that Casio America quietly replaced the DW-5600E with the UE under the same SKU in many cases g-central.com g-central.com.) So essentially, if you buy a new DW-5600 “standard” model now, you’re likely getting the UE version. Street prices can be a bit lower than MSRP – it’s not uncommon to find it on sale around $80-90. Big box stores and websites often have promotions. Internationally, the pricing is similarly budget-friendly; in Europe it might be around €79-99 depending on VAT. Availability is high – this is not a limited model. It’s part of Casio’s ongoing lineup and should remain so for the foreseeable future (likely eventually fully supplanting the older 5600E stocks). In summary, the DW-5600UE-1 is an affordable, easily obtainable watch. It offers tremendous value at ~$100, considering its heritage and improvements. One thing to note: because Casio rolled this out as essentially a stealth update, make sure any stock you buy is the “UE” (module 3525) if the LED backlight matters to you. By now, most are, but some old inventory (like older DW-5600E-1Vs) could linger at smaller shops. The telltale sign is the text on the dial: the UE says “ILLUMINATOR” in the upper right, whereas the really old ones said “Electroluminescent” or had a different text arrangement. But again, in 2025 it’s likely a non-issue. Bottom line: ~$100 gets you this watch brand new, with plenty of stock around. No collector markup, no scarcity – a refreshing reality in a time of hype watches.
• DW-5600BB-1 (Around $90-$110, still in production): The DW-5600BB-1, despite being released back in 2012, has remained in Casio’s catalog because of its enduring popularity. It’s part of the “Basic” range often called the “Monotone” series (all-black, all-white variants, etc.). The list price has been in the same ballpark as the standard DW-5600. Some regions listed it around $99 as well. For instance, a Canadian retailer had it at $140 CAD (which is roughly ~$105 USD) duewest.ca. In the U.S., if you can find it on Casio’s own site (it might not always be in stock there), it would likely be around $99. However, the street price and availability can vary. Availability: As of early 2025, Casio USA’s site did show the DW5600BB-1 product page casio.com, implying it’s still an active model. G-Central noted that Casio hadn’t updated that page to a “U” version, and there were “no reports of the DW-5600UBB-1 being sold in the U.S.” yet g-central.com. This suggests the existing stock is still the old module version (which is fine, it’s the same model essentially). Retailers like Amazon often carry the DW-5600BB-1 (often as DW-5600BB-1CR) and you’ll see prices anywhere from ~$80 on discount to ~$110. It sometimes sells out and comes back – likely because it’s a bit of a trend/fashion item as well. Internationally, it’s similarly priced; in some markets it might be slightly pricier due to demand (e.g., in Japan it’s popular, being a “cool” variant – it was reportedly one of Japan’s #1 G-Shock sellers in the mid-2010s g-central.com). Still, it’s not limited or hard to find if you look around. Many online watch stores stock it, and it’s definitely available through various marketplaces. One caveat: make sure to buy from reputable sellers because there are imitation “blackout” G-Shocks or modded fakes (rare, but worth noting in the age of replicas – buy from known Casio dealers). The collector interest in the DW-5600BB itself is not high in terms of resale; it’s more of a style piece. So you’re not going to pay over retail for a new one typically. In fact, you might snag it on sale if lucky. In summary: The DW-5600BB-1 will run you roughly $90-100 and is readily available, though occasionally it might be out of stock in one store or another due to its steady demand. If Casio ever discontinues it (no sign yet), that could change, but for now it’s a current model. Check multiple sources – for example, if Casio’s own shop is out, Amazon or authorized dealers likely have it.
• GMW-B5000TB (Originally $1,550, now collectible pricing): The GMW-B5000TB-1 was a limited edition full-metal square released in late 2019, with an initial list price of ¥150,000 JPY (around $1,400) and an official US MSRP of $1,550 g-central.com. Being a premium piece (titanium, DLC, sapphire) and limited production, it was never cheap. At release, some enthusiasts balked at the price – “hilariously stout” at $1550 for the basic black version as one commentator put it thetruthaboutwatches.com – but it did sell out in many places. Casio only made it for a limited period (the production run was constrained likely to a few months), and by early 2020 it was officially marked “discontinued” on Casio Japan’s site g-central.com. Initially, it wasn’t too hard to get at retail; even G-Central noted both the TB-1 and its camo sibling were *“easy to acquire” from various retailers while available g-central.com. But once those stocks dried up, the only way to get one has been the secondary market or remaining new-old-stock at some dealers. Current Market Price: As of 2025, the GMW-B5000TB has become a collector’s piece. Prices in the resale market have generally trended above the original retail. For instance, online watch trading platforms show recent secondary market sales around $1,200 – $1,800 USD for pre-owned or unworn examples reddit.com. On Reddit’s r/gshock, users observed units selling for ~$1,144 on the low end and up to ~$1,800 for unworn ones, with one brand-new authenticated sale hitting $2,800 in early 2024 reddit.com reddit.com. Most hover around the $1.2k–$1.5k range depending on condition and completeness (box, papers, etc.). Essentially, it has held its value or appreciated slightly since 2019, a fairly rare thing for a digital watch. This aligns with broader trends – a WatchCharts analysis noted the GMWB5000 “was up ~49.9%” over the past year in market price, significantly outperforming average Casio indices watchcharts.com watchcharts.com, and over 5 years up 154% (though that likely aggregates all full-metal squares, not just the TB) watchcharts.com watchcharts.com. The bottom line is that if you want a GMW-B5000TB today, expect to pay at least the original $1,550 if not more. Availability: You won’t find this model new at normal Casio dealers now – it’s long gone from official stores. However, you might occasionally see one new-in-box at watch shows, specialty dealers, or online marketplaces (e.g., Chrono24 has had a listing around $2,400 chrono24.com, StockX had sales around the $1,500 mark in the past stockx.com). Pre-owned ones pop up on eBay or forums, often in excellent condition because many were bought by collectors. As with any high-value item, caution and authentication are key if buying second-hand. One encouraging note: with the explosion of G-Shock popularity, demand remains strong for the titanium models. The TB is especially sought after because it’s the original black titanium square and was limited. Collectors see it as historically significant (first 5000-series with sapphire, first full titanium square). Some hope Casio will do another production run or a similar model in the future (they did subsequent titanium squares like the fancy camouflage TCC-1 in 2022, but that one was even more limited). For now, the TB is a hot ticket. If you find one around the original price, that’s considered a good deal in the G-Shock community. If it’s over $2k, that’s on the high side but not unheard of for brand new. Keep in mind regional differences: in Asia the watch initially retailed for less in equivalent USD (Japan 150k yen), so sometimes sellers from Japan or Hong Kong might have slightly better pricing (though import fees can negate that). In summary: The GMW-B5000TB-1 is scarce and expensive in 2025. Budget at least ~$1,300 for a decent chance, and be patient or ready to pounce when one appears. It’s not impossible to obtain – dozens are out there trading – but it’s the kind of piece you likely have to hunt for or pay a premium on a platform with buyer protection. For those who want the style without the price, Casio has also released other full-metal squares (steel or other coatings) in the sub-$600 range – but none in all-black titanium with these exact specs yet (aside from the camo version). So the TB remains a bit of a holy grail among square G-Shocks.

TL;DR: The DW-5600UE and DW-5600BB are affordable and readily available (around $100 or less, any day of the week). The GMW-B5000TB is pricey and effectively only available second-hand, often at above-retail prices due to its limited nature and collectability. Each watch targets a very different buyer: from the cost-conscious looking for a tough beater, to the style-conscious wanting a cool blackout, up to the collector or luxury watch lover willing to invest in a premium G-Shock.

User & Expert Opinions

It’s illuminating to hear what owners and watch experts have to say about these models. We’ve gathered a sampling of real user reviews and expert commentary to highlight the praise and critiques each watch receives:

DW-5600UE-1 – “Legend on a Budget”: Enthusiasts and reviewers generally consider the classic DW-5600 (and by extension the updated UE) as a benchmark for value and toughness. A review on BladeReviews.com exemplified this sentiment, stating: “For less than $50, the DW-5600E is an impressive piece of hardware. I wore mine with impunity for years and it has performed flawlessly… It is a perfect beater watch.” bladereviews.com bladereviews.com. This speaks to the remarkable durability and reliability of the 5600 series. Owners often talk about how these watches just keep going through abuse. Another owner pointed out how intuitively functional it is: “It has everything I need and works well for most people… the beauty of the 5600 lies in its simplicity.” bladereviews.com bladereviews.com. Many appreciate the updated UE module’s features too – the move to an LED backlight and longer battery is seen as a welcome modernization without losing the watch’s soul. On forums, you’ll see comments like “the new LED is super bright, finally a 5600 I can read in the dark easily” and people pleased that Casio maintained the under-$100 price point. In summary, experts laud the DW-5600UE as the continuation of a “legend” hodinky-365.com – a watch that encapsulates G-Shock’s toughness, now with minor but meaningful upgrades to keep it current. Criticisms are few, mostly that it doesn’t have fancy features (no solar, no sync, etc.), but that’s by design. As one article noted, the 5600 shows that owning “an iconic part of horological history doesn’t have to set you back more than $60.” fratellowatches.com fratellowatches.com In other words, it’s the bang-for-buck king that even watch snobs respect for what it is.

DW-5600BB-1 – Bold Style, Mixed Reviews: The DW-5600BB tends to garner very polar reactions – people love its look, but some have issues with its legibility or comfort. On the positive side, many users absolutely adore the aesthetic. A Reddit user raved, “Gorgeous watch, got a lot of compliments on this.” reddit.com. Another said, “The only G I own and I love it. I wanted something tough for diving/ sports while still looking somewhat classy and this one is perfect in my opinion.” reddit.com. These comments highlight that the BB hits a sweet spot for those wanting a durable watch that doesn’t scream with colors or shine – it’s understated and cool. Fashion blogs and streetwear circles also embraced the blacked-out G-Shock look; it’s been called “the coolest G-Shock?” in some YouTube reviews, precisely because of its stealth factor. However, user reviews often mention the negative display drawback: “I sold mine, because I couldn’t get on with the negative display; it was too hard to read under low light, and I didn’t want to be constantly using the backlight.” reddit.com. Another echoed that, saying “the screen is not super legible… same as a regular 5600 apart from color.” reddit.com. These honest takes show that while the watch is as tough as any 5600, daily practicality can suffer if your lighting isn’t ideal. Some also have noted the strap fit or feel wasn’t perfect for them (as mentioned earlier, one had trouble with it being too tight/loose at different holes reddit.com). But these seem to be individual cases. On the whole, experts view the DW-5600BB as a design statement – many watch reviewers include it in “top G-Shocks for style” lists. A review on BestWatchBrandsHQ summed it up: “It’s light but feels it can take any daily beatings… The DW-5600BB-1, also known as the ‘Blackout’, stands out by not standing out at all visually – and that’s its charm.” bestwatchbrandshq.com. That nicely captures how it’s appreciated: it’s a badass-looking variant of a proven watch. So, if you prioritize looks and don’t mind glancing a bit harder at times, users say it’s extremely satisfying. If you prioritize easy reading, some advise either modding it (people have swapped in positive displays from other models) or choosing a different variant. In short, the DW-5600BB is praised for its appearance and core toughness, but garners user critiques about its readability. Knowing that upfront helps set expectations – many are absolutely happy with it (the model wouldn’t have lasted 10+ years in production if people didn’t buy it en masse).

GMW-B5000TB – “The Premium Square Experience”: The reception of the GMW-B5000TB among G-Shock enthusiasts and watch media has been extremely positive, albeit with the obvious caveat of its price. When it was released, G-Central and others highlighted its breakthrough features (titanium build, sapphire crystal) and noted it was “highly anticipated” g-central.com. Experts called it a “premium evolution” of the original G-Shock concept ablogtowatch.com. ABlogtoWatch remarked that it “takes the classic shape and adds truly premium materials and finish throughout.” ablogtowatch.com. Watch reviewer WatchDavid was effusive, calling it “another stroke of genius” from Casio and even nicknaming it a “titan” among watches watchdavid.com watchdavid.com. He noted the retro homage in its design and loved the light weight, saying “you usually don’t notice that you wear it – … The lightness… is a pure luxury feeling in everyday life.” watchdavid.com. Many reviewers echo that sentiment: the TB feels special. It elevates a beloved design to luxury watch territory, and that emotional satisfaction is high. One YouTube watch reviewer labeled it “the undisputed king of G-Shock squares”, praising its “phenomenal build quality & materials” youtube.com. Owner feedback in forums shows a lot of pride in owning the TB – it’s often the centerpiece of a G-Shock collection. People love the DLC finish (few report any scratches, so it’s holding up well), and they appreciate the technical features like Bluetooth. However, the main criticism has always been the price. Some traditional watch folks can’t stomach spending ~$1500 on a digital Casio, no matter how fancy. As one commentator joked, “should you spend used Speedmaster money on a digital watch?” thetruthaboutwatches.com. Yet, even he concluded the titanium squares “aren’t that bad [in value]. They’ll ‘wear light.’… They have sapphire crystals, which is a genuine improvement.” thetruthaboutwatches.com. This suggests that once you get over the sticker shock, the watch does justify itself through the experience it delivers. Collectors have noted that resale values staying high indicates how much the community treasures it (it’s not like many are trying to dump them). In fact, on the r/gshock forum, when someone asked about finding one at a reasonable price, a veteran replied: “Keep your eyes open. One sold on eBay for $1,144… They go for more and less. [Another] brand new sold for $2,800… They’re out there.” reddit.com reddit.com. This implies a level of desirability where folks are hunting for deals and willing to pay a premium. The prestige factor of the TB in G-Shock circles is real – wear one in a gathering of G-Shock fans, and you’ll get nods of respect (or envy). As a G-Shock columnist humorously put it, “the black one will draw a knowing nod from all the SEALs and underworld assassins out there who leaf through G-Shock catalogs” thetruthaboutwatches.com – in other words, it’s a stealth-wealth flex in the G-Shock world. On the flip side, a few practical users comment that a steel GMW-B5000 does 95% of the same stuff for one-third the price, so the TB is a luxury indulgence. That’s true; the TB is not about function gain (aside from weight and sapphire) but about material and exclusivity. In summary, expert and user opinions on the GMW-B5000TB are that it is an outstanding execution of the square, delivering on both looks and performance, and is worth it for the enthusiast despite the high cost. It’s frequently described with superlatives (best, king, ultimate square, etc.). Criticisms focus on price and the limited nature (some wish Casio made more or a non-limited titanium option, which they eventually did in different styles). If you’re in the target demographic (G-Shock lover with a taste for premium watches), the TB is often a dream piece.

To wrap up the sentiment: The DW-5600UE and BB are universally respected for what they represent – the former for pure functional toughness, the latter for style – with minor quibbles noted (backlight differences and display on the BB). The GMW-B5000TB is revered among G-Shock connoisseurs, viewed as a pinnacle of the line; its only “flaw” is being expensive, but even that has kind of proven to be an asset in collector value.

Collector’s Perspective & Resale Value Trends

For those curious about the investment or collector value of these G-Shocks, the landscape varies drastically between the basic models and the limited titanium model:

• DW-5600UE-1 & DW-5600BB-1: Generally speaking, basic G-Shocks like these are not appreciable collector’s items. Casio produces them in large quantities and they’re meant to be worn, used, and replaced if needed. On the resale market, a used DW-5600 (UE or older E) or BB won’t fetch anywhere near retail – they’re readily available new for ~$100, so used ones often sell for $50 or less unless they have some sentimental provenance. There are a few exceptions: if Casio discontinues a popular variant, sometimes collectors might pay a bit more down the line. For example, if the DW-5600BB-1 were discontinued and years later someone wants that blackout look, they might pay over original retail on eBay if it’s scarce. But since it’s been in production for so long, that scenario is uncertain. One interesting twist: Casio’s 40th Anniversary in 2023 saw some special releases. They made limited editions like the DW-5040PG (with a recrystallized steel case) and also announced a non-limited DW-5000R-1A reissue (a modern reboot of the original 1983 DW-5000C) for late 2024 g-central.com g-central.com. Those sorts of releases can spark interest in the square lineage. For instance, the anniversary limited DW-5040PG-1 was more expensive and sold out quickly, causing resale to spike because it was a tribute piece. The new DW-5000R, being a standard release but modeled very faithfully after the first G-Shock, might become a collector’s favorite as “the modern original”, especially since it has a screw-back and classic looks g-central.com g-central.com. What does that mean for the DW-5600UE or BB? Possibly not much directly – however, sometimes when a new model comes, old ones phase out and those attached to the older ones might keep them. The DW-5600E (non-UE) was so ubiquitous that even though it’s effectively replaced, nobody is clamoring to buy the old one as a collectible – you can still find them new or used easily. So I wouldn’t consider the UE or BB as investments. Their value is in their use. The BB might have a slight cult status in the future as one of the cooler variants of the classic square, but since Casio could also update it (a DW-5600UBB might eventually be sold widely, with better display), that could even dampen interest in the original BB if the updated one is superior. Collector value in G-Shocks tends to come from either limited editions, historical significance, or unique aesthetics. Standard black DW-5600 variants are historically significant (the design) but not scarce. If anything, maybe decades from now a mint condition DW-5600E or UE might interest someone for nostalgia, but the monetary appreciation would be modest. In essence, if you’re buying a DW-5600UE or BB, do it for love and wear – not for profit. One note: The DW-5600BB has seen some knock-off fashion versions and so on because of its style; but ironically that might even reduce collector value (mass imitation). The real Casio is of course better, but it shows how mainstream it went. From a collector enjoyment perspective, plenty of G-Shock fans have a DW-5600 or two in their collection just because it’s an icon – but it’s usually the least expensive piece in their watch box.
• GMW-B5000TB – Collector & Resale Darling: In stark contrast, the GMW-B5000TB has become highly collectible. As detailed in Pricing, it’s already selling above its original retail in many cases. This model ticks all the collector boxes: limited production, first-of-its-kind features, part of a historically important lineage, and even a special suffix (the Japanese release was GMW-B5000TB-1JR – JR indicating a special edition). As soon as it was discontinued, savvy collectors picked up extra units, anticipating future demand. We’ve indeed seen an upward trend: one chart showed the full-metal G-Shock line (including these) having a 49.9% price increase over a year watchcharts.com watchcharts.com, and generally G-Shocks have become more collectible in recent years, especially unique variants. The TB’s value retention is excellent – five years on and people are paying what they did new or more, which is not common for a digital watch. There’s also a bit of a “legend” status to it now: being the first titanium square, only 2019 production, never reissued. If Casio were to release another black titanium square widely, it might temper prices, but Casio tends to differentiate; for example, they did a GMW-B5000TVA-1 (“Virtual Armor” edition) and GMW-B5000TVB-1 in 2021/2022 with wild designs (laser-engraved text and camo), but those are stylistically very different (and also limited). So the TB remains unique in its clean, original style execution. From a collector community standpoint, the TB is often mentioned alongside vintage pieces as a future classic. It’s also worth noting that titanium G-Shocks in general have low production – even other models like the titanium camo (TCM) or the newer TCC “Grid” camo of 2022 were limited. Casio seems to treat titanium squares as special releases only, which means the supply will always be constrained, bolstering collector value. Unless Casio were to add a permanent titanium square in the lineup (which seems unlikely soon due to cost), the TB should continue to be sought-after. Some have speculated on resale trajectories: if in 10-20 years the G-Shock square is still beloved, a pristine TB could become like what a vintage first-gen G-Shock is today – except with the benefit that titanium doesn’t age like resin. Imagine 2040, a TB in box might be a retro-tech gem. Already, on forum threads, people advise, “If you find a GMW-B5000TB for a reasonable price, grab it – you won’t regret it,” and lament not doing so when prices were lower. The flip side is: as a collector, you also want to enjoy it. Many choose to wear their TB in rotation rather than keep it locked away, since part of its charm is on-wrist. It’s quite durable for a collectible, so why not? Another interesting trend: Customized mods. A small niche of modders take steel GMW-B5000s and put aftermarket titanium parts on them, effectively creating “custom TBs” because the original is hard to get reddit.com. This indicates demand outstrips supply for that titanium feel. Overall, in collector terms, the TB is an “A-tier” modern G-Shock collectible. It may not reach crazy Rolex-level appreciation, but within its domain it’s top. As of mid-2025, WatchCharts listed a “fair price” for one around $1,224 (if you can find it) and noted it sells faster than 70% of watches when listed watchcharts.com watchcharts.com – meaning if one comes up, buyers snap it relatively quickly. That liquidity is a sign of strong collector interest. So yes, the TB has effectively already proven to be a sound “investment” by not depreciating. If market trends hold, it could even rise further, especially as more people enter the hobby or if Casio’s 50th anniversary (2033) stirs nostalgia for early full-metal models.

In summary: For the DW-5600UE/BB, think of them as legendary workhorses and everyday pieces – their value is intrinsic and emotional rather than monetary. For the GMW-B5000TB, it’s a modern collectible with a rising value trend and solid demand, making it not just a cool watch but a prized asset in a G-Shock collection. Collectors are likely to continue valuing it highly, and resale prices reflect that exclusivity.

Official Links & Further Resources

For those who want to dive deeper or verify details, here are some official product pages and credible sources related to these models:

• Casio G-Shock DW-5600UE-1 Product Page: See Casio’s official spec sheet and photos casio.com casio.com. (Casio International site)
• Casio G-Shock DW-5600BB-1 Product Page: Official page highlighting its design (Casio USA) – specs confirm ~2-year battery, etc. buywatchesonline.com.au.
• Casio G-Shock GMW-B5000TB-1 Product Page: Official spec page from Casio (e.g., Casio Singapore) – lists titanium construction, DLC, sapphire, Multi-Band 6, etc. casio.com casio.com.
• G-Central G-Shock Fan Site: News and articles on these models. For example, G-Central’s piece on the DW-5600UE update g-central.com and the announcement of the GMW-B5000TB g-central.com provide great context. G-Central is cited often above and is a reliable fan-operated news resource.
• Hodinkee / Fratello Articles: These watch journalism sites have covered G-Shocks historically. Fratello’s “Introduction to the Square Premium Series” fratellowatches.com fratellowatches.com has background on the full-metal initiative leading to models like the TB.
• Reddit r/GShock Community: A treasure trove of owner experiences and Q&A. Threads like the one discussing TB prices reddit.com reddit.com or DW-5600BB impressions reddit.com reddit.com are cited above and give unfiltered user opinions.
• YouTube Reviews: There are numerous video reviews for each of these. E.g., “Casio G-Shock DW-5600BB Review” by tech or watch channels, or videos comparing metal G-Shocks. Maverick Watch Reviews on YouTube reviewed the GMW-B5000TB (“King of Squares”) which we paraphrased youtube.com. Video reviews can show the watches in real lighting and on the wrist, which complements what we’ve discussed here.

(All sources used in this report are cited in-line in the format 【source†lines】 for verification.)

Upcoming Models & Related Releases

Casio is continually evolving the G-Shock line, so what’s on the horizon or recently released that relates to the DW-5600 and GMW-B5000 families?

• 40th Anniversary Releases (2023): Last year marked 40 years of G-Shock, and Casio celebrated with several special models. In the square realm, one notable release was the DW-5040PG-1 (“Project Team Tough” edition) which was a throwback to the original 1983 watch, made with a recrystallized steel bezel and screw-back – it sold out as a limited edition. Building on that, Casio surprised fans by planning a non-limited reissue of the very first G-Shock. This watch, the DW-5000R-1A, is essentially a modern recreation of 1983’s DW-5000C-1A. It has the classic “ARMY” style case (flat bezel, old font on the face, etc.), but with an updated module (module 3576) featuring an LED backlight and about 3-year battery g-central.com g-central.com. It’s made in Japan with a screw-lock steel case and is meant to be a standard production model (not limited) g-central.com g-central.com. As of late 2024, it was expected to release (there were some delays, but likely it’s out or coming out by 2025). This is big news for square fans – essentially an “origin” model available to all, without the huge price of vintage pieces. It could potentially become “the one G-Shock to get” for many, bridging vintage looks and modern tech. Also in 2023, Casio launched the DW-6940 and DW-5600 “Remaster Black” series – these had laser-etched bands listing past model names, a fun collectible twist g-central.com.
• Updated “U” Variants for Other Models: We saw the DW-5600E -> DW-5600UE. Casio also did similar module upgrades for the DW-6900 (DW-6900U) and others. For the DW-5600BB, as noted, an updated DW-5600UBB-1 exists (with the same module 3525 as the UE). It wasn’t officially marketed in some regions, but it has been spotted (for example, on Casio’s international G-Shock website product listings gshock.casio.com). This UBB should theoretically have the white LED backlight which would improve the BB’s low-light legibility. If and when Casio USA or other Western markets start selling it, fans of the BB might want to grab the updated one. Keep an eye out for product codes: DW-5600UBB-1 could quietly replace DW-5600BB-1 on shelves, similar to how the UE replaced the E. By 2025, still “no reports” of UBB in the U.S. g-central.com, but that could change.
• GMW-B5000 Line Expansions: Since the initial steel models in 2018 and the titanium TB in 2019, Casio has released multiple new variants in the GMW-B5000 series. Notably:
  • Colored Stainless Models: Casio introduced IP-plated steel versions like the GMW-B5000D-2 (blue IP, 2022), GMW-B5000D-3 (green IP, 2023) which have vibrant colors but more affordable (~$550) casio.com. In 2023, they also did a limited Eric Haze collaboration GMW-B5000EH-1 (with artist Eric Haze’s pattern on the steel, $720) casio.com. There was also a wild GMW-B5000SS-1 “Grid” with a stainless patchwork design, and others like the GMW-B5000GD-4 (red IP).
  • Titanium “Tron” & Camo: The GMW-B5000TVA-1 (Virtual Armor) in 2021 was a black titanium with numerous laser-engraved markings giving it a sci-fi mech look – very limited and expensive (~$1,650) youtube.com. Then came the GMW-B5000TVB-1 in 2022, similar idea but with some bronze-colored accents, and the GMW-B5000TCC-1 in 2022 which had a gray “circuit board” camouflage pattern on titanium. Each of these were limited runs and sought after. In mid-2025, Casio released a GMW-B5000D-1C which had the color scheme of the original 1983 model (with a red line on the dial and brick pattern, but in steel) g-central.com.
  • Module Update (Bluetooth App change): Starting 2023, new GMW-B5000s use module 3539 instead of 3459, which is essentially the same but uses the newer “Casio Watches” app instead of the old “G-Shock Connected” app g-central.com. This is more of a software/platform update than functional change. If you buy any current GMW-B5000, you’ll likely use the Casio Watches smartphone app, which unifies Casio’s watch connectivity.
  The takeaway is that Casio is committed to the full-metal 5000 series, continually giving us new flavors – from conservative to crazy. For someone eyeing a GMW-B5000TB but unable to find one, keep watch on Casio’s releases; they may not do that exact model again, but they might do another black titanium in the future (perhaps for the 45th anniversary in 2028 or something). Given the success, we wouldn’t be surprised if a “Titanium 2.0” square appears eventually, maybe even with an upgraded display (some dream of an OLED or Memory-in-pixel display while retaining the case shape – none announced yet, but Casio has shown color MIP screens in other lines like GBD-200).
• Square G-Shock Spin-offs: Casio also extended the square look into other purposes. In 2022-2023 they launched the GW-5000U-1 (Japan-only) – this is essentially a premium version of the classic square with a steel inner case, screw back, and solar/MB6, but in resin outside. It’s a spiritual cousin to these and remains a cult favorite (imported by enthusiasts, ~$300). And in 2023, Casio introduced the DW-H5600 series – a fitness-oriented G-Shock with the classic square shape but with an optical heart rate sensor and smartwatch-like functions g-central.com. It’s like a G-Shock combined with a fitness tracker, targeted for workouts (G-Squad line). The DW-H5600 has a slightly larger case to accommodate sensors and a rechargeable battery, and a MIP LCD display. While it’s a different beast, it shows Casio leveraging that iconic square design in new ways, which is exciting for the lineup’s future.
• MR-G Digital “Square”: For the ultimate square, Casio’s top-tier MR-G line (hand-finished, made in Japan, luxury G-Shocks) launched the MRG-B5000 in 2022. These are the same size as a 5600 but crafted in titanium with special coatings (some parts in Cobarion alloy), fancy metal band construction, etc., priced around $3,500-$4,000 ablogtowatch.com. They come in two variants (one with gold accents, one with red). Essentially, Casio took the square to the luxury extreme. This is worth noting for upcoming trends – Casio clearly believes the square design has legs from $100 all the way to $4000. The MRG-B5000 is a “related launch” in that it shares spirit with the GMW-B5000TB (titanium, sapphire, etc.) but goes even further. If one wanted an even higher-end square and missed the TB, the MR-G is out there (albeit at a steep price). It’s likely to remain a small niche due to cost, but it demonstrates the brand’s commitment to evolving the square.

Looking ahead, we expect Casio to continue refreshing the DW-5600 family with new colors (it’s common for them to drop new limited color series every season – e.g., transparent “jelly” editions, military colored editions, collaboration models with designers or franchises, etc.). And the full-metal GMW-B5000 series will likely see more limited editions and maybe incremental improvements (perhaps a GMW-B5000 with a Tough Solar and USB charging, or new display tech years down the line).

For now, if you’re interested in these models, it’s a great time: you can get a modernized classic (DW-5600UE), a stylish icon (DW-5600BB), or hunt for the pinnacle (GMW-B5000TB), and you’ll own a piece of the G-Shock legacy. And with the 40th anniversary behind us and Casio showing no signs of slowing, the DW-5600 and GMW-B5000 lines will continue to thrive – delighting both new fans and long-time collectors with that perfect blend of nostalgia and innovation that only G-Shock can deliver.