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Smart ring Ultrahuman Ring AIR — sleep and fitness tracker, Titanium, Size 13, PPG SpO2 sensor, up to 6 days battery
Summary description:
Ultrahuman Ring AIR is a smart ring activity tracker for sleep and fitness monitoring. It features a round titanium form factor, infrared photoplethysmography (PPG) blood oxygen sensor, heart-rate tracking, and compatibility with Android and iOS. Powered by a 24 mAh LiPo battery providing up to 6 days of use. Includes USB‑C to USB‑C cable. Size 13.