This is an optical, switchless Wah set to Michael's preferred tone and sweep. Simply step on pedal to engage Wah and step off to go to bypass. Equipped with our custom MQ2 Inductor and TrueTone Buffer circuit and dressed up in Michael's blood spatter graphics! Measuring 6.85 inch. long x 4.5 inch. wide x 2.75 inch. high, powers from one 9V battery or optional Morley adapter. Equipped with LED Indication, cold-rolled steel housing, quick clip battery door and one-year warranty. Features include: · Electro-Optical Wah · Switchless on/off operation · Perfect for pedalboards · Set to Michael's preferred tone and sweep · Glow-in-the-dark toe end logo · Works with guitar, bass or keys!