SMA Coach Heart Rate Monitor Smart Bracelet Fitness Tracker Wristband Sports Bracelet Compatible with iPhone and Android Smartband Smart Bracelet for Men Gift for Momen (Red) 1) Heart Rate Monitor Smart Blacelet 2) Sweat proof IP65 waterproof and Anti-splash,Gift for Girlfriend 3) Call/Message Reminder,Gift for Boyfriend,Gift for Friend and Family 4) Function:Track Steps,Calories,Distance,Pace,Goal,Sleep,and Sedentary,Anti-Lost,Support 8Alarmssetting,vibration reminder,Never miss any important meet 5) Compatibility: Android 4.3 or above, iOS 8.0 or above, iphone 4/4s/5/5s/6/6s/6plus/7/7s/7plus/8/X/XS/XR,Bluetooth 4.0 or above,One year warranty