Ultrahuman Ring Air Size 11 Matte Grey

The Ring Air Size 11 Matte Grey tracks heart rate, sleep, steps, and skin temperature for everyday health monitoring.

Sized for a comfortable fit, this Ultrahuman fitness tracker is designed for users who want continuous health insights without the bulk of a smartwatch. The lightweight ring is made from fighter jet grade titanium with a hypoallergenic epoxy resin inner coating, making it suitable for all-day and overnight wear.

Bluetooth v5.0 connectivity syncs your data with iPhones running iOS 15 or later and Android devices running Android 6 or later. The battery lasts 4 to 6 days on a full charge, and the ring is water resistant up to 100 meters for up to 12 hours, so you can keep tracking during swimming or showering.

Model 170138 in grey comes with a 1 year manufacturer's warranty.