1991 Sony Walkman Stereo Cassette Player WM-EX90 Analog Audio, Compact Cassette, Gyártók, Magnó, Walkman https://audiomuzeum.hu/wp-content/uploads/1990/1991%20Sony%20Walkman%20Stereo%20Cassette%20Player%20WM-EX90/SONY-WM-EX90.mp4 Sony WM-EX90 Operating Instructions