NW-S736FK

The NW-S736FK belonged to the sixth-generation S Series Network Walkman family and introduced Omakase Channel to the lineup. It unified design language from the prior S730 and S630 models while expanding playlist and external-input options. With 4 GB flash storage it supports MP3, WMA, AAC, and WAV playback plus video, photo, FM radio with recording, noise cancellation, the 240x320 LCD display, 40-hour lithium-ion battery, built-in speaker, Clear Audio Technology, and speaker support.

The speaker-equipped S736FK makes more sense once you look at what the S Series had become by then. It had matured into a polished, compact Walkman line that could support accessory-driven retail variations without losing itself. This is less about the speaker dock and more about what it says about the stability of the player underneath.