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Smart ring Ultrahuman Ring AIR — sleep and fitness tracker, Titanium, Size 14, PPG SpO2, USB-C, up to 6 days battery
Summary description:
Ultrahuman Ring AIR is a smart ring activity tracker for men and women designed to monitor sleep and fitness. It features a round titanium form factor, infrared PPG blood oxygen sensing (SpO2) and heart rate tracking, USB‑C charging, 24 mAh LiPo battery with up to 6 days runtime, and an 8.1 mm width. Suitable for continuous wear to track sleep stages, recovery, and daily activity.