"Enjoy great sound wherever you go with this fantastic portable panel speaker from Vivanco. The mini speaker weighs about 175g but with its integrated amplifier providing 2 Watts RMS, it's no lightweight in terms of sound. The perfect partner for a travelling MP3 player the speaker connects with a 3.5 stereo input and comes with an audio cable as well as four AAA batteries. It has an on/off switch, a protective lid and a blue LED operating display so you can easily see if the device is operating or not."
Need to add £3.45 for P&P, but still is cheapest price - especially when you include the batteries, that for some reason, don't seem to be available when bought from other sites.
Anyway, saw it on QVC the other night, and bought one for myself - the sound is cracking for such a small speaker. Definitely worth a punt!