This is the SC500, a portable scratch tool from Portablism. I purchased it from the official website. I've used it to some extent, but I've been careful to store it, so it has little wear and tear and is in good condition. Please purchase only if you understand that this is a used item. By installing sound sources on the included USB memory, you can scratch with your favorite songs and scratch samples. (Initial sound files are also installed.) The included USB cable is for power supply. As a scratch DJ tool, it's small and easy to carry, so you can easily practice scratching. It's not often listed, so take this opportunity. *Separate power supply, headphones, speakers, etc. are required for use. Contents: SC500 main unit, USB memory, USB cable, instruction manual (English) Operation has been confirmed, but no claims or returns are accepted.