Walkman: A História Ilustrada (1979–2004) A timeline of Sony’s cassette Walkman models from 1979 to 2004 - EP.6 - 1982: SONY WALKMAN WM-7

 

Introduced later in 1982, the WM-7 replaced mechanical controls with electronic logic keys and

 added remote operation. It brought auto-reverse and Dolby B, while a polished metal

 mechanism with magnetic take-up clutches improved stability. An efficient DC-DC converter

 allowed long playback from two AA batteries.