Ultrahuman Ring Air Size 07 Aster Black

The Ring Air Size 07 Aster Black tracks heart rate, sleep, steps, and skin temperature for continuous wellness monitoring.

Sized for a US 7 fit, this Ultrahuman smart ring is designed for all-day comfort and accuracy, making it suitable for users who want discreet health tracking without a bulky device. The lightweight build and screen-free design allow for uninterrupted sleep and daily wear.

Constructed from fighter jet grade titanium with a tungsten carbide carbon coating, the ring is water resistant up to 100 meters for up to 12 hours. It connects to iPhones running iOS 15 or later and Android devices running Android 6 or later via Bluetooth v5.0. The battery lasts 4 to 6 days on a full charge, supporting regular syncing and health data recording.

Model 170105 in black comes with a 1 year manufacturer's warranty.