Features: Unique and intense environment echo color, with soft and natural sound. With 4 functional knobs to adjust the performance of the echo effect. True bypass footswitch for switching between echo effect and bypass status. LED light for indicating effects or bypass status. Full metal shell and compact size, durable and portable. Comes with a small pouch for convenient storage and carry. Functional Knobs: --LEVEL knob: adjust the level of overall output --REPEAT knob: adjust the repeat times of delay echo --TONE knob: adjust the tone of the effect sound --RATE knob: set the rate of the echo effect