This unit was ONLY available for sale inside prisons. It has a clear shell to prevent them from hiding forbidden objects inside. It features an AM / FM Stereo Radio Tuner and a fully functioning cassette player. It also has the Sony AVLS circuitry and Local / DX Function. This unit still has the last inmates prison number inscribed on the cover which can be seen in the last photo. Other then that it is fully intact and in PERFECT WORKING CONDITION!!! Perfect For Any Serious Collector!!