YAMAHA: Yamaha QY100 handheld sound module. Includes genuine adapter, instruction manual, data list, data filer, and CD (unopened, so details unknown). The instruction manual and other booklets have minor stains, but are still readable. This is a used item, so there are some scratches and marks, but it's in fairly good condition. The LCD screen is also clean. Demo data playback confirmed with the power adapter, and sound confirmed with headphones. Front panel button operation confirmed. Battery operation also confirmed (batteries not included). Other operations have not been confirmed. I do not have detailed knowledge of the equipment, so I cannot answer detailed questions. Please understand that I do not have the past history of the equipment. I have checked the item generally, but there may be some oversights. Please forgive me in such cases. As this is a vintage used item, it has some wear and tear, even though it is in good condition. Please purchase with this in mind. We cannot accept claims after arrival. We do not ship overseas.