A portable personal compact disc player with headphones.
A portable personal audio cassette player with headphones.
Discman was Sony's brand name for portable CD players. The first Discman, the Sony D-50 or D-5 (in some regions), was launched in 1984.
Walkman is a brand of portable audio players manufactured by Sony. The original Walkman, released in 1979, was a portable cassette player.