1999 NW-MS7
The NW-MS7 is the first Network Walkman to use a Memory Stick as its storage medium.
Network Walkman
Memory Stick Walkman
These were Sony’s first Network Walkman models, built around removable Memory Stick media before the company fully committed to internal flash storage. This collection captures the awkward but important opening phase of file-based portable audio, when digital music still behaved more like swappable media than a self-contained library.
2000 NW-MS9
The NW-MS9 is a second-generation Memory Stick Walkman, a smaller version based on the NW-MS7.
2001 NW-MS11
The NW-MS11 is the second-generation Memory Stick Walkman, succeeding the NW-MS7 and supporting expanded storage capacity.
2002 NW-MS10
The NW-MS10 is the second-generation Memory Stick Walkman, following the NW-MS7.
2003 NW-MS70D
The NW-MS70D is a Memory Stick Walkman equipped with built-in flash memory.
2003 NW-MS90D
The NW-MS90D is a third-generation Memory Stick Walkman that supports built-in flash memory and Memory Stick Duo expansion.
2004 NW-MS77DR
The NW-MS77DR is a third-generation Memory Stick Walkman that supports built-in flash memory and Memory Stick Duo expansion.
