1,This guitar pedal can raise pitch by an octave and also add some sense of ambiguity, and the middle cut switch allows to control the pitch. 2,By adopting a bypass design, the pitch loss is minimized and the pedal is better controlled. 3,Powered by 6F22 9V battery or power adapter, this pedal set is with battery clip included. 4,With very simple installation, user just connect the power cord and audio output device when use it. 5,There is a power cord and rubber pad in the kit to effectively protect guitar effect pedal. Item Type: Distortion Guitar Pedal Power Supply: DC9V Power Cord Connector: PPP3 battery connector (not including battery) Negative Current Consumption: 80mA 1 x Effector 1 x Power Cord 1 x Rubber Pad Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.