I purchased this as a spare, but I'm selling it due to a sudden system change. The photos of the main unit are of the one I'm currently using. The item for sale is unopened and unused. The JVM amp incorporates all of Marshall's accumulated know-how to date. This JVM overdrive/distortion pedal faithfully reproduces the diverse expressive power of the JVM. Intuitive control is possible, from soft overdrive to high-gain distortion with strong compression. ■SPEC Type: Overdrive/Distortion Current Consumption: 55mA Power: 9V center-negative 2.1mm adapter / 006P 9V battery 9V Battery: Usable Body Size: 101 mm (W) x 131 mm (L) x 52 mm (H)