After connecting to Bluetooth, you can directly dial the phone number on the screen to answer the call. Bluetooth 5.2 (supports Android 5.0, IOS9.0), allows you to exercise, fitness, and bike hands-free, using high-fidelity waterproof speakers. If you don’t need the call function, you can turn it off.Multiple sports modes, IP67 waterproof level(Note: not suitable for diving, swimming or sauna. Try not to put the watch in the water).