Aiwa CS-M1 Stereo Microcassette Recorder
Dimensions: 9″ x 5 1/8″ x 1 3/8″
Power: 4 X AA
Made in: Japan
The very first portable stereo to contain a micro-cassette instead of a standard size one. Aiwa marketed this model to women, thinking the small shape and attractive look would make it a hit.