T55+ Bluetooth Smartwatch with Belt | Waterproof Calling Feature | Activity Tracker | Full Touch Display and Heart Rate Sensor Features Calling Function: Make & receive a call through Bluetooth calling feature with Message, drinking, Sedentary Reminder. Open the function in APP, the bracelet will vibrate when comes a new message Bluetooth voice call: support Call dial pad: support Address book synchronization: support up to 1000 entries Call records: save up to 50 Message reminder: Support, save up to 15 items (can be deleted) Time display: support Step counting: support Calories: Support Distance: Support. data analysis Pedometer, sports calorie, calorie consumption, exercise mileage record Sedentary reminder to get up and change the unhealthy lifestyle Sleep monitoring Objective Science Quantitatively record and analyze your sleep status Main function introduction: Calling Dial:Bluetooth call via cellphone, taik at the watch end. Phonebook:Sync all the contacts in the cellphone, max is 400 contacts. Call logs Power-saving mode:Turn watch on to enter clock mode, other functions are turned off; display, access to adjustable screen brightness and backlight off duration. Anti-lost: Click "find phone", connected phone will be ringing warning, after find the phone.