Lincass Fitness Tracker Waterproof Smart Bracelet Heart Rate Monitor Wristband Pedometer Step Walking Distance Calorie Counter Smart Watch Fitness Tracker for iOS Android Smartphone (Black) Advanced optical heart beat sensor, get continuous, automatic wrist-based heart rate and simplified heart rate zones Track workouts, heart rate, sleep, calories burned, floors climbed, active minutes and steps Wear on your wrist, tracks your activity 24/7 and provides guidance and motivation to reach your activity goals See call notifications, daily stats and time of day on the LED display Sync stats wirelessly and automatically to your computer and smartphone