NW-W273S

The NW-W273S is a W Series Network Walkman offering 4 GB storage for MP3, AAC, and WMA playback. It uses a lithium-ion battery rated for 8 hours. This S variant continued the compact wearable focus of the W line.

This model carries that same broader athletic wearable significance, but by then the line feels more assured and less of an oddity. Sony was clearly not treating the W family as a side experiment anymore. It had become a legitimate branch with its own use logic, its own audience, and its own design constraints.