NW-S765K

The NW-S765K incorporated built-in speaker in the 16 GB ninth-generation S Series model. It features the new Bluetooth capability. With 16 GB storage for MP3, WMA, AAC, and WAV files plus video and photo, it includes a 42-hour battery, WM-PORT, Clear Phase, Bluetooth, and speaker.

This model extends the same S765 platform into an accessory-driven retail package. The underlying player was already stable, so Sony could build around it instead of redefining it.