Apple Watch Series 10 (2024) features a 1.9-inch OLED display, ECG, SpO₂, skin-temperature sensing, and about 18 hours of battery life, with Series 11 rumored for fall 2025 to bring major innovations such as a possible Watch X design and micro‑LED display. Samsung Galaxy Watch 8 (2025) comes in 41mm and 45mm sizes, adds the…
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