1, Healthy test: We can check your physical index, such as steps, distance, calories burned, heart rate, speed, activity time all day, and 14 training modes will help you get a good fitness level.
2，Heart Rate and Sleep Monitor
3，Usb charge, High quality polymer rechargeable battery,7-10 days standby time,4 days operating time.
4，Supports Bluetooth 4.0. Support system: iOS 7.1 or above (iPhone 4S, iPhone 5/5S/5C, iPhone 6/6S plus, iPhone 7/7S plus, etc.), Android 4.4 or above (Huawei Mate 7/P9, LG, Samsung, etc ),
5 , 1 year warrenty，if the products have any problem, we will send a new one for you freely