Walkman: A História Ilustrada (1979–2004) A timeline of Sony’s cassette Walkman models from 1979 to 2004 - EP.18 - 1988: SONY WALKMAN WM-505

 

Introduced in 1988, the WM-505 paired a compact body with wireless headphones, long before

 Bluetooth. Its all-metal construction set it apart from plastic models in durability.