This item was included when I purchased the main unit, but I had been using an old white pad, so this black pad has been stored unused. It has not been powered on for over 10 years. Since I no longer have the main unit, I have not confirmed its operation. I have at least confirmed that the lamp lights up when batteries are inserted (last image). I believe it will probably work, but I am concerned about the condition of the capacitors inside, so I am selling it as junk. Even if it cannot be used normally due to a malfunction, returns are not accepted for items purchased as junk. Would anyone who can repair it themselves or who wants it for parts be interested? ■ No need to comment before purchasing, direct purchase is welcome. ● It will be shipped via Yu-Packet Plus from Yu-Yu Mercari. ● Due to work, I may not be able to return home for 2-3 days, so shipping may be delayed by a few days depending on when you purchase. I will notify you via message if there is a delay in shipping, so please understand.