????Amuzik Is a professional manufacturer of pedal effects for electro-acoustic equipment, specializing in Mini effects, double step effects, drum machine looper effects, digital effects, guitar speaker amplifiers, tuner, capo, metronome and other musical instrument accessories. Features: Super mini size, made of aluminum alloy, convenient and durable. With record(up to 10min), overdub(unlimited), undo, redo and delete functions. With 1G SD Card inside, the music you created can be imported/exported directly to/from PC. Simple operation, one key to achieve almost all of functions. With one knob for adjusting the output volume. Operating Instructions: Working Current:22mA on/off LED indicate effect or bybass LEVEL Knob adjust the the play output volume INPUT Jack:1/4 mono audio jack, for connecting Guitar OUTPUT Jack1/4 mono audio jack, outputs the signal DC In power Jack DC 9V (negative in the center) True Bypass Footswitch Push down the footswitch to toggle between on and bypass status. Packaging: 1X Mini Looper Pedal 1X 1GB SD Card 1X User Manual