free
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7 Forth/Volume up
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8 USB charging port
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9 AUX port
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10 TF card port
Power on
Plug car charger into car cigarette lighter, LED display lights up. Adjust the
frequency of car and transmitter to the same to match.
TF card/USB flash drive mode
Plug TF card/USB flash drive to play music. Short press volume buttons to increase or
decrease volume, long press to go back to last track or move to next step. Short press
"Play/Pause" button to play or pause music, long press to transfer to different playing
mode, such as put a song on a loop, play all the music repeatedly. Double click to
transfer to different EQ mode. Short press "CH" button to adjust frequency. Long
press "CH" to transfer to different mode.
b. Under Bluetooth mode, short press to receive and end phone
calls, indicator around it works like breathing light...
a. Under Bluetooth/TF card/USB flash drive mode, short press
to increase volume.
b. Under Bluetooth/TF card/USB flash drive mode, long press to
move to next track.