Compatible: iOS 8.0 and above are compatible with Android 4.3 and above smartphones, supporting Bluetooth 4.0 Exercise pedometer: The bracelet can record exercise time, distance, steps, calorie consumption and other related information, allowing you to master exercise scientifically. Convenient charging: long-lasting battery life, USB direct plug charging design, unplug the wrist strap, you can directly charge on any computer and USB charger, without adapters and charging cables. Waterproof design: IP67 life waterproof, in addition to daily waterproofing, you can also wear a smart watch to swim easily. Smart reminder: Vibration sensing between the wrist, even if the mobile phone is put in the bag or the mobile phone is in silent mode, you will not miss important calls.