Main unit & code? It shows signs of use, such as minor scratches. There are also stickers on it. It has a stand on the back, but it was probably broken. When shaken, it makes a rattling sound, so some screws may be loose. It turned on when I put in batteries. Operation confirmed ◉ I used it during my school days. Available for immediate purchase. Please refrain from purchasing if you are concerned about its condition, as it has been stored at home.