Brand Name: M-VAVE Is Batteries Included: no Material: Aluminum alloy High-concerned chemical: none Origin: Mainland China Plug Type: NONE Type: Guitar Pedal Power Supply Model Number: M-VAVE Guitar Pedal Power Supply Voltage Output: 6 ways DC 9V 100mA, 2 ways DC 9V 300mA Size: 14*2.6*2cm