This is a portable cassette player that uses 2 AA batteries and has Dolby NR, Auto Reverse, and all of the other basic functions you would expect. 

This cassette player has been tested and works great. There are some light signs of corrosion in the battery compartment, but when I put in fresh batteries they work fine with no issues. I played several cassettes and they play, FF, and rewind just fine. There are some light scratches and other lights signs of wear on the outside of the player. The plastic button to open the cassette player has broken off and you just have to use your finger nail to flip the switch that opens the player (see photos).