Sony Sports Walkman WM-FS191 and Sony CD Walkman (Discman)
Yellow sports Walkman and Discman. The Discman says on it ;'AVLS (Automatic Volume Limiter System) Groove CD Compact Player'.
Walkman is a Sony brand trade name, and dates back to 1978 when the first Walkman was manufactured in Japan.
Approximate dimensions of Walkman: 120 x 100 x 50 mm. Approximate dimensions of Discman: 160 x 120 x 30 mm.
Made in Japan, circa 1980s.