I had the cassette size box one I inherited from my younger brother when he bought a new one. Replaced my akai. As a college student I had about 4 rechargabl

I had the cassette size box one I inherited from my younger brother when he bought a new one. Replaced my akai. As a college student I had about 4 rechargable aa batteries. I loved that the Walkman works with one aa battery, as I never knew my batteries state of charge. Amazingly thin. As you pointed out you had to pull the device open so the cassette could fit inside. The battery seemed to take a lot of the internal space. The main disadvantage was really slow fast forward/ rewind but you hardly did that with mix raves anyway. This isn’t the same model but the photos give a good idea of the inside mechanism. These were complex mechanical systems. http://stereo2go.com/forums/threads/just-picked-up-this-beauty.3910/ http://stereo2go.com/forums/threads/just-picked-up-this-beau... Some bigger model internals: http://stereo2go.com/forums/threads/sony-walkman-wm-f2097-motor-question.2937/ http://stereo2go.com/forums/threads/sony-walkman-wm-f2097-mo...