Ultrahuman Ring Air Size 05 Space Silver

The Ring Air Size 05 Air Silver tracks your activity, sleep, and health metrics with a discreet smart ring design.

This Ultrahuman fitness tracker is suited to users who want continuous monitoring without a screen on their wrist. Its lightweight build and snug fit make it comfortable for all-day and overnight wear, especially for those who have matched their finger size to the Ultrahuman sizing guide.

The ring connects to iPhones running iOS 15 or later and Android devices running Android 6 or later via Bluetooth v5.0. Its battery lasts 4 to 6 days on a full charge, so you only need to recharge once or twice a week. The device is water resistant up to 100 meters for up to 12 hours, and its outer shell is made from fighter jet grade titanium reinforced with tungsten carbide carbon coating for durability.

Model 170122 in silver comes with a 1 year manufacturer's warranty.