Feature:1. ALL DAY EXERCISE TRACKING: Tracks steps, distance, calories burned, and other information all day long during your daily routine, motivating you to develop active life habits.2. STYLISH: This ring is lightweight, stylish and comfortable. Energy saving technology ensures continuous surveillance for up to 7 days on a single charge without interruption. APP is compatible with for Android, convenient for you to check your data at any time.3. ACTIVE LIFE: It is not only a health surveillance device, but also an active life style. Motivate you to stay active by recording and analyzing your health data.4. IP68 WATER RESISTANT: You can wear it as much as you want, whether you are washing your hands, taking a bath, swimming or any other daily water related scenarios. Various types of sensors constantly record your health data as usual.5. NICE PRESENT: Smart ring is an art of fingertips, comfortable and senseless to wear. It is an ideal present to your friends and family. It is an excellent present for weddings, graduations and housewarming parties.Specification:Item Type: Smart RingMaterial: Stainless SteelRing Battery Type: Li Battery, Ring Battery Capacity: 18mah (Built In)Ring Battery Life: About 7 DaysRing Charging Time: 60 MinutesAPP: For JYouProColor: Blue.Package List:1 x Smart Ring1 x Instruction Manual1 x Charging Cable