Yamaha MU5 handy type sound module. Body only (batteries not included). Power adapter is not included. This is a used item, so there are some scratches, but overall it is in good condition. The LCD screen and its display are in good condition. The sponge on the battery box lid has deteriorated (there is some debris inside the box) and has been removed. This does not affect battery operation. I have confirmed the sound with headphones by playing demo data with battery power. All keyboard buttons produce sound. I have also confirmed the same operation with my own adapter (adapter not included). Other operations have not been confirmed. I do not have detailed knowledge of the equipment, so I cannot answer questions. Please be aware that this is a used item, so there is some wear and tear. I have checked it roughly, but there may be oversights in detail, so please forgive me in that case. Please purchase only if you understand that this is a used item from a previous era. Please be aware that we cannot respond to claims after arrival. We do not ship overseas.