Technics RS-646D Cassette Tape

Technics RS-646D (D-46)
The power turns on and sound is produced. It is unknown if recording functionality is available.
Recommended for those interested in antique and Showa-era electronics.
There is a battery compartment on the back, but it is unknown if it is usable.
Accessories and the original box are not included, only what is shown in the photos.
As this is an old item, there are many scratches.
- Brand: Technics
- Model: RS-646D

Thank you for looking.