LENCO BMC-085 User Manual page 12

external speaker or micro HiFi set. You can adjust the volume on the
BMC-085 for microphone and music.
Magic sound
Turn on the device, double click M button to enter magic sound function.
Short press M button to change between the 4 different voice effects. To
go back to normal voice, deactivate the magic sound you can do this by
double clicking the M button.
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