Ultrahuman AIR Size 9 Smart Ring Bionic Gold -Open To Offers-

Ultrahuman size 9 smart ring. Comes with a new charger. Ring does have some scratches but works great. Battery lasts 2-3 days   The Ultrahuman Ring AIR tracks sleep, including total sleep time, sleep stages (light, deep, and REM), sleep efficiency, sleep consistency, and overall sleep quality. It also monitors heart rate, resting heart rate, heart rate variability (HRV), skin temperature, blood oxygen (SpO₂), stress levels, recovery, readiness, daily activity, steps, calories burned, distance traveled, workout performance, VO₂ Max, circadian rhythm, menstrual cycle health, ovulation predictions, and long-term health trends.