Walkman: A História Ilustrada (1979–2004) A timeline of Sony’s cassette Walkman models from 1979 to 2004 - EP.13 - 1985: SONY WALKMAN WM-101

 

Also released in 1985, the WM-101 used a slim rechargeable “gum stick” cell while retaining AA

 support. Weighing under 200 grams, it favored portability. It shipped in black, red, light blue, and

 gray.