Photos: 30 years of the Sony Walkman

Sony ruled portable cassette players throughout the 1980s and 1990s, but with the onset of digital music and iPods, it lost its market hold. It still uses the name Walkman for its digital music players and Sony Ericsson's music phones. Pictured here is Sony's newest touch-screen X-Series Walkman, complete with Wi-Fi for getting on to the Web from hot spots and, in the US, free music with the Slacker app. This lets you choose from genre- and decade-based stations in the Slacker rotation. So, for now, people can tune into 1980s hits and still sing along with REO Speedwagon's "Keep On Loving You".