GT FIT Pro is a stylish movement sleep monitoring Bluetooth low energy products 1, support the pedometer function, exercise calorie conversion; 2, can sleep monitoring, statistical analysis of sleep quality of sleep; 3, support the sharing of health information, sports and other functions; 4,Accessibility services can be obtained to assist the app message reminder function and push other application messages to the smart watch(GT Pro). 5,You can connect a smart watch(GT Pro) only to receive call reminder, SMS reminder, one button rejection and SMS quick reply functions.You must have a smart watch(GT Pro)，or you cannot use the receive call reminder, SMS reminder, one button rejection and SMS quick reply functions. Tips: The phone system must be android4.4 or more, and the phone must support BLE