The Sony Network Walkman NW-S203F MP3 player has been reviewed over at Trusted Reviews. ‘Weighing in at an amazing 26g, it's lighter than my bunch of keys - even the smaller set (house and shed keys) that I usually detach when I'm going riding. It actually feels quite similar to some remote controls I've seen with some devices – let alone a player by itself. It's available in 512MB, 1GB and 2GB varieties - my review sample featured 1GB. Much like the E507, it uses a three tiered toggle switch for selecting tracks. Pull it all the way to the outside edge and you can select the album (by twisting it like the accelerator on a motorbike). The middle is for selecting the track, and the final position is hold.’