Roland U-220 Sound Module Power turns on. Power-on and button checks only. Other operations have not been confirmed. I haven't tested the sound output because I don't have any MIDI equipment. Since detailed operation has not been confirmed, it is considered a junk item. The internal battery has never been replaced. The manual can be found by searching Google for "Roland U-220 manual" and is available as a PDF (178 pages). This is an item for the main unit only. Approximate external dimensions: W430mm x D340mm x H45mm Serial No.: AB01842 MADE IN JAPAN I think it's in good condition for its age, but there are fine scratches and stains due to aging. Included accessories: Sound Library Tone ROM Card Roland SN-U110-06 Orchestral Winds Roland SN-U110-09 Guitar & Keyboards Due to the nature of the item being used, returns and refunds are not accepted. Thank you for your understanding. As there is no box, I will take care in packaging, wrapping it in air-cushion packaging (bubble wrap) and placing it in a recycled cardboard box for shipping.