It's in very clean condition as it was hardly used. Velcro on the back. Operation confirmed. The level and EQ are very thoughtful and easy to use. This is a sale only for those who understand that it is a used item. The BOSS SUPER Chorus CH-1 is an effector that provides a rich chorus effect. - Model Name: SUPER Chorus CH-1 - Brand: BOSS - Output Type: OUTPUT A (MONO), OUTPUT B - Control Knobs: Level, Depth, Rate - Power: 9V dry cell battery or AC adapter Thank you for viewing.