Fitness Tracker,Airsspu Wearable Sports Tracker Wireless Activity Wristband + Heart Rate Sleep Monitoring for Iphone Android Samsung Smart Watch Bracelet(blue) Record the daily exercise, Tracks steps, distance, calories burn and so on, make you exercise is more efficiently. Multidimensional sleep monitoring, accurate analysis of the sleeping quality , make you have a better understanding of the effects of sleep. Get continuous,automatic to simplified heart rate data on your wrist. Sedentary remind/Call Reminder/Sleep Cycle alarm clock/and more warmly function bring the better experience. Boasts up to 7 days battery life. Apply to iOS 8.0 and above version,Android4.4 and Bluetooth 4.0+ and above version for smart phone. Notes:APP of the new revision,Please upgrade APP "Fitband" in time, more features will increase and keep the App with device have a better communication. When you meet problems, please contact us to get the technical support.