Zoom 505 II Multi-effects Electric Guitar Pedal Made by: ZOOM 33 Effects, 9 at once; 36 Programs; 12 Types of Distortion; Auto-Chromatic Tuner Includes: 505II Guitar Pedal, Operation manual, Box Requires: Either 4 "AA" Batteries or DC 9V Adapter Not included: 4 "AA" Batteries, DC 9V Adapter