This is a Sony MZ-B10 minidisc player and recorder. I've not tested this unit thoroughly, and have no way of doing so, but it powers on and I've got no reason to believe it's not functioning. It's in excellent physical condition, but doesn't come with any peripherals. Found in the back of a cupboard while clearing out old stock and figured it was worth seeing if anyone wants it. Apologies for the bad pictures.
eBay