Track your health around the clock with this Ring Air fitness tracker in sleek Aster Black. Designed with fighter jet grade titanium and a hypoallergenic inner coating this size 8 ring is both durable and comfortable to wear. It connects to your iPhone or Android device via Bluetooth 5.0 monitoring your circadian rhythm sleep patterns and even detecting AFib. The impressive battery lasts 4-6 days on a single charge while its water resistance up to 100 meters means you can wear it swimming without worry. Comes with a 1-year warranty. Model 170152.