Track your health around the clock with this Ring Air fitness tracker in sleek Aster Black. The size 06 ring is crafted from fighter jet grade titanium with a durable tungsten carbide carbon coating while the inner surface features medical-grade hypoallergenic epoxy resin for comfortable all-day wear. It connects to both iPhone and Android devices via Bluetooth 5.0 monitoring your circadian rhythm sleep patterns and even detecting caffeine windows and potential AFib. With impressive water resistance up to 100 meters and a battery that lasts 4-6 days between charges it's ready for whatever your day brings. 1 Year Warranty. Model 170104.