Ultrahuman Ring Air Size 06 Space Silver

The Ring Air Size 06 Space Silver tracks heart rate, sleep, steps, and skin temperature for users seeking a discreet fitness companion.

Sized for a US ring size 6, this Ultrahuman fitness tracker fits fingers with an internal diameter of about 16.5mm and a circumference of roughly 51.9mm. Its lightweight build, ranging from 2.4g to 3.6g, and hypoallergenic epoxy resin inner coating make it comfortable for continuous wear, including overnight sleep tracking.

The outer shell is crafted from fighter jet grade titanium reinforced with tungsten carbide carbon coating, providing durability for daily routines. The ring connects to iPhones running iOS 15 or later and Android devices running Android 6 or later via Bluetooth v5.0. It is water resistant up to 100 meters for up to 12 hours, and the battery lasts 4 to 6 days on a full charge.

Model 170123 in silver comes with a 1 year manufacturer's warranty.