[SMART RING] The smart ring health tracker can check your exercise time, distance traveled, calories burned and the quality of your sleep through the APP. It is compatible with Android 5.0 and above, and Apple IOS10.0 and above. [EASY TO WEAR] Every Sleep Tracking Wearable Ring is built to last, lighter than the average wedding band, non-allergenic, and water resistant. From a workout to a night out, Smart Rings for Men & Women discreetly monitors your health with comfort and accuracy. [COMFORTABLE] After painstaking efforts, the thickness of the health rings for women is 2.5mm, which is 0.3mm thinner than the previous one, and it is very comfortable to wear. [LONG BATTERY LIFE] After the sleep ring is fully charged, it can be used continuously for up to 10 days, and there is no need to worry about electricity frequently. [IP 68 WATERPROOF] The fitness tracker ring is fully enclosed structure, IP68 waterproof technology, swimming and diving can be worn, support 1000 meters depth waterproof. › See more product details