BOSS DR-5 Dr. Rhythm Section Drum Machine. 

As shown, cosmetically. Item powers up, not fully tested. When I turned it on I got a low battery err. The internal battery will need to be replaced to save your stuff. No chip or cracks to body but body does show wear from normal use and age. External battery compartment is untested, look clean and free of corrosion. Unit comes with 3rd part ac adapter. No owners manual.

OFFERED AS IS. NOT FULLY TESTED