Used inside a boat, so there are few scratches and no operational problems. Velcro (male) is attached to the back. I don't have batteries on hand, so I haven't been able to confirm battery operation. Multi-function bass effect pedal, sound adjustment possible - Model Name: SansAmp Bass Driver DI - Brand: Tech 21 NYC - Controls: Level, Blend, Treble, Presence, Drive, Mid, Bass - Input/Output Terminals: XLR, 1/4" input, parallel output - Country of Manufacture: Made in U.S.A. Thank you for viewing. Please note that this is a used item and is sold as-is, non-refundable, and non-returnable.