Ultrahuman Ring Air Size 07 Raw Titanium

The Ring Air Size 07 Raw Titanium tracks activity, sleep, and health metrics on your finger.Sized for everyday wear, this Ultrahuman fitness tracker suits users who want continuous monitoring without a bulky device. Its slim 8.1mm width and lightweight 2.4 to 3.6g build make it comfortable for all-day and overnight use, including sleep tracking.The ring pairs with iPhones running iOS 15 or later and Android devices running Android 6 or later via Bluetooth v5.0. Its sensor array includes infrared photoplethysmography, non-contact medical-grade skin temperature, and a 6-axis motion sensor to monitor circadian rhythm, temperature-based ovulation prediction, caffeine window detection, AFib detection, and sleep. Water resistance up to 100 meters for up to 12 hours allows for swimming or showering without removal. The battery lasts 4 to 6 days on a full charge, reducing the need for frequent charging.Model 170144 in silver comes with a 1 year manufacturer's warranty.