■ Under the USB/Bluetooth music/third-party music APP mode: ● Press : Play the previous music (music number - 1); ● Press : Play the next music (music number + 1). ■ Bluetooth call Record, phone book interface: ● Press the button to move upward the selected item. ● Press the button to move downward the selected item. Instruments ■ Under instrument menu mode: ● Press button to switch leftward the level-1 menu and its submenu; ■ During reserved charging setting: ● Press button to switch rightward the level-1 menu and its submenu. ● Press button to switch leftward the hour and minute setting; ● Press button to switch rightward the hour and minute setting. Phone button (If fitted):
■ Make/answer call. (Pressing this button can mute the audio system.) ■ When the system is in non-Bluetooth interface, if Bluetooth is not connected, press the button to jump to Bluetooth connection interface; if Bluetooth is connected, the system will jump to the main dialing interface; ■ When entering a phone number or select an item in the call log or phone book interface, press the button to perform the dialing function; Voice recognition button (If fitted): Press this button to switch over the multimedia display screen to voice recognition interface and realize the voice function. Instrument/Return button:
■ Under the non-menu mode of instrument, press the the button to pop up instrument menu. ■ Under the instrument menu mode, press the button to return to upper level menu or (If no upper level interface is available) exit the menu. ■ In the charging interface, press this button to enter the reserved charging setting interface. ■ In the reserved charging interface, press this button to exit the reserved charging. ■ In the Bluetooth call interface, press to end call. 78 3-4 Switch