Ultrahuman Ring Air Size 09 Space Silver

The Ring Air Size 09 Space Silver tracks heart rate, sleep, steps, and skin temperature for all-day health monitoring.Sized for a secure fit, this Ultrahuman fitness tracker suits users who want discreet, continuous tracking without the bulk of a watch. The ring is crafted from fighter jet grade titanium reinforced with a tungsten carbide carbon coating, while the inner surface uses medical-grade hypoallergenic epoxy resin for comfort during overnight and daytime wear.Bluetooth v5.0 connectivity links the ring to iPhones running iOS 15 or later and Android devices running Android 6 or later. The battery lasts 4 to 6 days on a full charge, and the ring is water resistant up to 100 meters for up to 12 hours, making it suitable for swimming and daily activities. Sensor technology includes infrared photoplethysmography, non-contact medical-grade skin temperature, and a 6-axis motion sensor for comprehensive tracking.Model 170126 in silver comes with a 1 year manufacturer's warranty.