Pioneer's compact DJ controller, the DDJ-RB. There are no operational issues. Included accessories are the main unit and a USB cable (for connecting the PC and the unit). It's a lightweight unit, and the power is supplied via bus power from the USB cable connected to the PC, making it a suitable model for carrying around. There are fine scratches and signs of use on the surface, but none are particularly noticeable. There is also some non-removable dirt on the back, but since it's on the back, it's not very noticeable. In any case, please refrain from purchasing if you are looking for a product in like-new condition. Please understand that this is a used item before purchasing. The following information is from Kakaku.com: Type: DJ Controller Connection Terminals: USB B terminal x 1 Headphone Terminal: Yes Size/Weight: Width x Height x Depth: 482.6 x 58.5 x 272.4 mm Weight: 2100 g