Oura Ring 4 Ceramic Collection: Why This Stylish Health Wearable Could Revolutionize Your Self‑Tracking
Oura reinvents its smart ring through material science Oura has dominated the smart‑ring category — more than half of the 5.5 million rings sold to date were shipped in the last year wired.com. The Finnish–American company is now addressing fashion‑conscious and health‑obsessed consumers with the Oura Ring 4 Ceramic Collection, a series of premium rings made of zirconia ceramic. Unlike metal rings coated with paint, the color in zirconia ceramic comes from minerals baked into the material, so the hues remain rich even when the ring surface is scratched businesswire.com. Zirconia is lightweight and hypoallergenic, making it comfortable for extended wear. Oura’s