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V–
V
+
MODE
H–
B–
H
+
B
+
Short press to power on/off the BL20A1
Short press to mute
3
Short press: Volume down
4
Short press: Volume up
5
Short press: Treble up
7
Short press: Treble down
8
Short press: Bass up
9
Short press: Bass down
10
Single cycle/All loop
Note: When playing music in U-Disk mode, short press
this button to switch single loop or all loop
playback.
2
Short press: Play / Pause
Note: After connecting Bluetooth to the BL20A in
Bluetooth mode, long press this button will
disconnect the Bluetooth connection.
13
Short press to switch mode (AUX/U-Disk/Bluetooth)
Note: U-Disk must be inserted into the BL20A, skip it if
not.
6
Short press: Previous track
Note: It can only be used in Bluetooth or U-Disk mode.
AUX mode does not work.
11
Short press: Next track
Note: It can only be used in Bluetooth or U-Disk mode.
AUX mode does not work.
12
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