I use the Sony Ericsson W910i which in my opinion offers excellent quality sound through the supplied headphones, great for music lovers. I ordered these to take on holiday with me, so I could listen to a few tunes whilst in the villa.
The size was a shock- much smaller than I expected; but then the sound was even more of a shock- it's fantastic! They're not going to annoy the neighbours but for those of you familiar with the sound quality of a Sony Ericsson mobile, they give clear output without distortion of loss of quality. The various settings on the mobile- stereo wide, Mega Bass, etc- make a difference, something I wasn't expecting.
They come in a small but ideally sized plastic box, which looks pretty hardwearing, and I reckon they'll be perfect for my week in the sun- and no doubt more places too. The box keeps the speakers safe and secure, and the cable tidy. It snaps shut so there's no danger of anything falling out or getting lost. The cable even acts as an antenna for radio use, if you want to listen to this instead of your music on the memory card.
In summary, a brilliant buy- quality, price, size, sound- none of these can be faulted. Highly recommended for any Sony Ericsson owner.