I used this pedal powered by 6 x AA Batteries which I find easier cause there are no extra leads getting in the way. This pedal runs with a 9v power supply or the batteries.
The carry box shown in the pictures, I made myself, its made to fit the ME-80 plus an accessory compartment, its strong and very handy. Here are the key specifications for the Boss ME-80 multi-effects pedal.
Power Source: 6 x AA batteries or optional AC adapter (PSA-series). Battery Life: Up to 7 hours. 1 x 6.35 mm (1/4-inch) input.1 x 6.35 mm (1/4-inch) output. 1 x USB 2.0 port. Effects: Overdrive, distortion, modulation, delay, reverb, COSM amps, and more. Looper: Phrase Loop function with 38 seconds of recording.
Connectivity: USB audio/MIDI interface for computer connection. Weight: 3.6 kg (7.9 lbs). Dimensions: 44.7 cm (17.5 in) W x 23.1 cm (9.1 in) D x 7 cm (2.8 in) H. Additional Features: Manual mode for stompbox-style on/off, Memory mode for switching complete patch setups, eight multifunction footswitches, and free BOSS TONE STUDIO software for editing and organizing tones.