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16.
17.
18.
19.
20.
21.
22.
External DC input interface
Charging status indicator
Recording function button: (must insert USB or TF card)
Music bass adjustment.
Music treble adjustment
LED light switch
27
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30.
31.
32
USB,wireless connection playback status:equalizer sound switching
33.
34
Microphone priority function switch, (when this function is turned on,
music is playing, the microphone has sound input, the volume of the
music is automatically reduced, and when there is no sound input from
the microphone, the music changes back to the original volume level)
Recording function keys
4. Digital display window
TROLLEY
REC function: 1. Insert USB/TF card, press “REC” button about 2 seconds,
when “REC” appears in display screen, the function started. Only can record
the sound of wired or wireless microphone, music can’t be recorded. 2. Press
“REC” button again to stop recording and start playing the recording.
Mode switch button: AUX-USB-Wireless connection-FM, 4 modes in 1 button