VOX V847A Wah Pedal Bundle with AC Adapter Power Supply, Instrument Cable, Patch Cable, Picks, and Polishing Cloth Input/Output jacks: INST jack, AMP jack, DC i/p jack. Power supply: One 9V DC battery 6F22(S-006P) Power consumption: 540uA @ 9VDC Battery life for continuous use: approximately &gt;1 hours with manganese battery (will vary depending on conditions)