The Walkman cassette player is a portable audio device introduced by Sony in 1979. It allows users to listen to music on cassette tapes while on the go. The compact design and lightweight nature made it popular for personal use, enabling people to enjoy their favorite songs anywhere. Walkman players typically feature a headphone jack, volume control, and play, rewind, and fast-forward buttons. Over the years, the Walkman evolved to include CD players and digital formats, but the original cassette version remains iconic in music history, symbolizing the rise of portable music consumption.