This is the BOSS KATANA GO headphone amplifier, first generation. It features dynamic and responsive KATANA Amp sound and a variety of high-quality BOSS effects in a smart, palm-sized enclosure. You can practice anywhere with just a guitar and headphones. The unit shown in the photos is the only item included, and its operation has been confirmed. There are minor scratches, but I don't think there are any noticeable marks. If you are concerned about the condition, please refrain from purchasing.