Vintage Sony Voice Recording Cassette Player With Box

I have a really nice vintage Sony voice recorder in great condition with new belts and the original box. The tape speed has been calibrated. The tape head has been cleaned and demagnetized.

It has been tested and recording and voice activated recording works. It also works well as a playback cassette player with a built-in speaker.

A few caveats:
- Note that the headphone jack only sends signal to one ear. That’s how this vintage model was designed.
- I would say it is in mint condition, but there are a couple small scratches near the microphone. You can see in the picture.
- the box shows a power adapter in the picture, but I do not have this. It still works on two AA batteries.
- I cannot tell if the cue marker button is working. When I press it, I do not hear any audible tone, but I may not be understanding how it works.