Walkman: A História Ilustrada (1979–2004) A timeline of Sony’s cassette Walkman models from 1979 to 2004 - EP.16 - 1986: SONY WALKMAN WM-F57

 

Arriving in 1986, the WM-F57 combined FM/AM radio with auto-reverse cassette playback in a

 compact body. A built-in front speaker enabled casual listening without headphones. It ran on

 two AA batteries, supported Dolby B, allowed manual tape selection, and came in black, white,

 dark blue, and red.