Thank you for viewing. This is the BOSS OC-5 Octave. I used it on my effects board, but I took good care of it, so it's in very clean condition. I've confirmed that it works, and it functions without any problems. Velcro is attached to the back of the unit. All accessories are included (box, manual, and other included items). Please refrain from purchasing if you are sensitive to used items. As a latest-generation octaver, it boasts highly accurate tracking and a natural pitch feel. It also features the BOSS OC-2 mode, allowing for a wide range of sounds, from the thick octave sound of vintage units to modern and stable tones. I am selling it to organize my equipment. Due to the used nature of the item, no claims or returns are accepted. If you are looking for one, please consider it. ※ Shipping I will carefully pack and ship it promptly. Thank you.