Sony launched the Walkman TPS-L2, the first portable stereo cassette player, in 1979. Sony released the device in Japan on July 1, 1979, creating a new category of personal music hardware.
The original Walkman was a small blue-and-silver cassette player with two headphone sockets. It had no recording function, but it allowed people to listen to stereo music while walking, travelling, or exercising. Sony initially expected modest sales, yet demand grew rapidly after the product gained public attention.
The name “Walkman” became one of the world’s best-known brand names. In some markets Sony used alternative names, including Soundabout and Stowaway, before Walkman became the dominant international identity. The term is now often used generically, although it began as Sony branding.
The Walkman did not invent the compact cassette; Philips had introduced that format in 1963. Sony’s major contribution was combining cassette playback, portability, stereo sound, and lightweight headphones in a product people could use privately away from home.