Waterproof Bluetooth Smart Bracelet Sports Fitness Tracker Smart Wristband Waterproof, Pedometer Watch OLED Screen for Andorid Phones iPhones Touch control, easy to operate ,0.91 inch OLED screen for information watching. Water resist, suit for summer. Health care: sleep monitoring, sedentary reminder, multiple movement patterns Sports tracking, distance, time length, speed, calories, GPS movement track sharing Caller ID, SMS, Facebook, twitle message content display, anti-lose, the diplay will light up when you flip wrist The host and the watchband can be separated,The host comes with USB interface, can be directly plugged into the computer to charge