Ultrahuman Ring Air Size 08 Space Silver

The Ring Air Size 08 Space Silver tracks heart rate, sleep, steps, and skin temperature for all-day health monitoring.Sized for a US size 8 fit, this Ultrahuman fitness tracker is designed for users who want continuous background tracking without a display or on-finger notifications. Its lightweight build and hypoallergenic epoxy resin inner coating make it comfortable for extended wear, including overnight sleep tracking.The ring is constructed from fighter jet grade titanium reinforced with a tungsten carbide carbon coating, providing durability for daily routines. It is water resistant up to 100 meters for up to 12 hours, so you can wear it while swimming or showering. Bluetooth v5.0 connectivity pairs with iPhones running iOS 15 or later and Android devices running Android 6 or later, allowing you to view insights and trends in the companion app. The battery lasts 4 to 6 days on a full charge, reducing the need for frequent recharging.Model 170125 in silver comes with a 1 year manufacturer's warranty.