This is a keychain-type game console that was popular in the Showa era. It plays a pinball game when you insert button batteries (LR44). It's a beautiful item with almost no scratches. Operation has been confirmed, including buttons and sound. The screw that attaches to the battery compartment cover on the back is missing, so a different screw has been attached. Because it is a very old item, please consider purchasing only if you understand that it is non-refundable and non-returnable.