Jim Dunlop CRY BABY Wah guitar effects Pedal.

Jim Dunlop Cry Baby 535 Wah Pedal. Functionality: It's a wah-wah pedal, which alters the tone of your guitar signal, creating a distinctive "wah" sound. Power: It can be powered by a 9V DC adapter or a 9v battery.(not included) LED indicators: The green LED indicates when the wah effect is on, and the red LED indicates when the boost is engaged. Tested)see video). Vintage used condition. See pictures for closer details