This is a set including the main unit and the instruction manual. Operation has been confirmed. I tested it for 48 hours. The data will be erased before shipping. Batteries are not included. There are some minor scratches from use, as it was used by a child. The seams on the side of the main unit are slightly discolored. When checking the operation, it was a little difficult to open the battery compartment, but I don't think it will affect the use. There are markings on the instruction manual in magic marker. Please check the images. Please confirm the other conditions in the photos and only purchase if you agree with the current condition. This is a personal item. Please refrain from purchasing if you are looking for a perfect item or are very sensitive to condition. Shipping will be via Mercari delivery with simple packaging. Thank you for your understanding.