The headphones and remote also work perfectly. I can't find the mains adapter or the internal battery so I don't know if it runs off either of those, but it works perfectly from the included external battery adapter.
eBay
The Sony Walkman MZ-R900 Minidisc Recorder is a portable audio device made by Sony in Japan. This model is part of the Walkman product line, known for its compact size and high-quality audio playback. Featuring a headphone jack as its audio output, this Sony Walkman allows users to listen to music on the go with its record player capabilities. Perfect for music enthusiasts looking for a reliable and stylish portable audio device. Boxed with all accessories included Any questions please feel free to ask
eBay
Sony MZ-R700 portable minidisc recorder in excellent and fully working condition Comes with brand new high capacity NiMh battery and genuine Sony charger (the cable and connector have been replaced on the charger as these are known to perish over time) All playback and recording modes tested and working ok
eBay
Suitable for the MZ-R90 Minidisc recorder player. Uses 1 x AA battery.
eBay
Bought it New and Used it Lots. Great Thing and still works.Battery good but can't find the Charger.
eBay
Brand New Package contents NO BOX NEW TOSHIBA CARRY CASE, PROTECTION CASE, 2 new DISCS MICROPHONE New REMOTE CONTROL AA BATTERY PACK Rechargeable battery NEW PREMIUM AV STEREO CABLE USED BATTERY CHARGER NO BOX, Honest customers only. Problematic ones won’t be able to make future purchases, ever again. Nothing else included, if it is not mentioned, then it’s not included. For your protection and mine, security stickers are added to all products and serial numbers are recorded. Items are I.D labeled
eBay
Boxed with mains adaptor, instructions,cloth bags, remote with headphones, piggy back as case. complete with box. look at the photos and then zoom in to satisfy yourself in the condition.
eBay
In great condition and playing well.
eBay