Gakken's Adult Science Vacuum Tube Amplifier (with speaker). My family assembled and stored this item. Operation has been confirmed. ・Everything in the images is included. ・The only missing part is a screwdriver. Please use your own screwdriver if you disassemble it. ・It operates with two size-D batteries, which were originally sold separately. Batteries are not included in this sale. ・The box shows signs of aging. There are some minor scratches on the parts. ■Additional Notes■ The speaker and the main unit are connected in the 4th image, but they will be shipped separately. ■End of Additional Notes■ As this is an old item, there may be some age-related deterioration of the parts, and there may be oversights in the inspection. Also, we do not accept returns or refunds. We appreciate your understanding.