Ultrahuman Ring AIR – World’s lightest Sleep-Tracking
Ultrahuman Ring AIR – World’s lightest Sleep-Tracking Wearable, HRV, Heart Rate & Temperature Monitoring, Track Sleep, Movement & Recovery, Water Resistant up to 100 m, 6 Days Battery Life Sleep Index is derived to help you understand the various sleep stages such as Deep sleep, REM sleep, Light sleep and being Awake. During different stages of sleep, different metabolic processes...