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Smart ring activity tracker Ultrahuman Ring AIR — rose gold, PPG SpO2, 6-day battery, 8.1 mm width
Summary description:
Ultrahuman Ring AIR is a smart ring activity tracker in a round form factor with a rose gold finish. It uses infrared photoplethysmography (PPG) for blood oxygen (SpO2) and heart‑rate‑related measurements. The device supports Android and iOS, houses a 24 mAh LiPo battery with up to 6 days of runtime, and has an 8.1 mm width—suitable for continuous sleep, fitness and health monitoring.