NWZ-S764BT

The NWZ-S764BT is the Bluetooth-headphone bundle variant of the ninth-generation S Series Network Walkman. It introduced built-in Bluetooth to the family. With 8 GB storage supporting MP3, WMA, AAC, and WAV files plus video and photo, it uses a lithium-ion battery for 42 hours. WM-PORT, Clear Audio, DSEE, and bundled Bluetooth headphones were standard.

The Bluetooth version makes that balancing act more visible. Wireless support changes how the device fits into everyday use, but it also risks changing what the player is. Sony handles that carefully. The S764BT still is a Walkman first, with wireless layered on top instead of taking over.