Ultrahuman Ring AIR-Smart Ring Health Tracker, Size First with Ultrahuman Sizing Kit,Sleep Tracker,Smart Ring for Men/Women,Fitness Tracker - Bionic Gold (Size 11)

OverviewThe ultrahuman ring air is an advanced wearable device designed for comprehensive health and fitness tracking. It features sleep tracking, heart rate variability (hrv) monitoring, and temperature monitoring. The ring helps track workouts, movement, and recovery, and is water-resistant up to 100 meters. It boasts a 6-day battery life and comes with a lifetime free subscription. Made from fighter jet grade titanium, it is available in 10 sizes from 5 to 14. The ring provides insights into sleep stages, movement, recovery, and workout metrics, and includes a stimulant window recommender and circadian phase alignment for optimizing sleep-wake cycles.