2002 WM-EX521
The WM-EX521 is a playback-only Walkman equipped with an automatic inversion function.
2003
WM-EX422
The WM-EX422 is a playback-only Walkman with an automatic reversal function. It features a bass boost function and uses AA batteries.
Related Walkman
Walkman in 2003
Sony portable audio in 2003
MiniDisc
2003 MZ-E810SP
The MZ-E810SP was a MiniDisc player that supported both portable and stationary playback.
Discman
2003 D-NE10
The D-NE10 is a portable CD player that supports ATRAC3plus, ATRAC3, and MP3 playback.
Network Walkman
2003 NW-MS70D
The NW-MS70D is a Memory Stick Walkman equipped with built-in flash memory.
