Ultrahuman Ring Air Size 08 Aster Black

The Ring Air Size 08 Aster Black tracks heart rate, sleep, steps, and skin temperature for all-day wellness monitoring.

This Ultrahuman fitness tracker fits users seeking a discreet, comfortable way to monitor health trends without a screen or wristband. Its size 8 ring design is crafted from fighter jet grade titanium reinforced with tungsten carbide carbon coating, while the hypoallergenic epoxy resin inner layer ensures comfort for extended wear.

Bluetooth v5.0 connectivity pairs the ring with iPhones running iOS 15 or later and Android devices running Android 6 or later, allowing seamless syncing and insights through the Ultrahuman app. The battery lasts 4 to 6 days on a full charge, and water resistance up to 100 meters for up to 12 hours means you can wear it while swimming or showering.

Model 170152 in black comes with a 1 year manufacturer's warranty.