Sony Walkman

Walkman is a brand of portable audio players manufactured by Sony since 1979. It was originally introduced as a portable cassette player and later expanded to include a range of portable audio products. Since 2011, the brand has referred exclusively to digital flash memory players. 来源：https://en.wikipedia.org/wiki/Walkman 主图来自 Wikimedia/Wikipedia，发布前请核对 Commons 许可。