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