Thatree Sh01 Oled Bluetooth 2.1 Smart Bracelet Sport Watch with Pedometer / Sleep Monitoring / Calorie-burning Counter for Android Smart Phones. (Blue) Bluetooth: The samrt bracelet can be connected to the Healthy bracelet APP, and can see the ennergy consumption and sleeping status synchronously. Smart Vibrating Clock: Wake you up at appropriate time in sleep cycle and make you feel energetic. Sleep Monitoring: Monitoring sleep quality and performance; Recording the length of sleep time, and the depth of sleep. Wearable devices top smart bracelet for exercise and health. Sports management (Pedometer): Tracking steps (including walk and run), speed, time and distance; Calculating Calories and fat burned.