Guide Tracker with Heart Rate Monitor, Guide H3 Wireless Bluetooth Waterproof Touch Screen Smart Watch Healthy Wristband Track steps, distance, calories burned, support sedentary remind and calls message alert Capture your continuous wrist-based heart rate, with no chest strap required Waterproof IP67, can be used when swimming or shower Oled smart touch screen design, easy access to every function App "HPlus Watch", compatible with Android 4.4, IOS 7.0 or higher os, please refer the User Manual before use