1999 NW-MS7
The NW-MS7 is the first Network Walkman to use a Memory Stick as its storage medium.
2001
NW-E7
The NW-E7 is a Network Walkman in the E series that supports MP3 playback. It has 64MB of built-in storage and supports ATRAC and MP3 audio playback. It has an LCD display, supports long operating time with a single AA battery, and uses a dedicated USB cradle for transfer.
Related Network Walkman
Sony portable audio in 2001
2001 MZ-E600
The MZ-E600 was a MiniDisc player that supported MDLP and offered improved stability and ease of use.
2001 WM-EX921
The WM-EX921 is a playback-only Walkman equipped with an automatic inversion function.
2001 D-E666
The D-E666 is a portable CD player equipped with an electronic anti-skip mechanism using G-Protection.
