Features: calls, contacts, call records, music playback, custom dial, multi-language, recording, voice control.monitoring function: multiple exercise modes, steps, sleep, Movement track,Dual Bluetooth (Z73 is responsible for data transmission, Z73_Audio is responsible for audio transmission)Reminder function: alarm clock, sedentary reminder, drinking reminder, message push (call, SMS,other APP)Conventional functions: weather, calculator, alarm clock, stopwatch, countdown, remote camera, search for mobile phone/search settings, raise the wrist to brighten the screen, brightness adjustment, bright screen time, theme selection, do not disturb modeOther functions: Female-specific function, record female menstrual period, restore factory settings, and synchronize contacts.