2005 NW-A1200
The NW-A1200 is a Sony Style exclusive model of the first-generation A-series Walkman equipped with a hard disk drive.
2013
NW-W274S
The NW-W274S is a high-capacity, waterproof wearable Walkman part of the W series. It has 8GB of built-in storage and supports MP3, AAC, and WMA audio playback formats. It supports approximately 8 hours of playback with a lithium-ion battery.
