User Guide

 About music playback source switch:
 If it is playing music with Bluetooth at this time, just plug in TF card
and wait for 3 seconds, then TF card music can be played
automatically.
 If you switch from TF card music mode to Bluetooth music mode at
this time, please long press previous song button to Bluetooth music
mode.
 About receiving and making phone calls:
 Press the phone button to answer or hang up the call.
 Push the phone button twice to call back the last number in call log.
 Press the phone button to reject calls, and the numbers will be
reported.
 About switch machine:
 If you want to listen to the car's FM radio program or before getting
out of the car, please long press the power button to turn off the
device, but the USB also maintains the charging function. This device
does not consume your car's battery, but be sure to check that all
other power consuming devices in your car are turned off before you
get out.