Good 'ol English gentlemen at www.personalprojector.co.uk say:
For anyone who's been tracking the progress of pico projectors, this amazing little device will be seen as something akin to the holy grail.
Despite its pocket-sized dimensions, it's somehow able to throw out a 100in pin-sharp picture at 800x400 resolution with an impressive brightness rating of 45 lumens.
As well as being able to connect to your laptop, console, iPod or phone, the 305 also has its own built-in media player capable of handling MPEG and AVI files from the generous 4GB of onboard memory.
For even more storage, there's an SD Card slot and there's even a cute little tripod for keeping things steady.
The media player struggled with some DIVX files I tried, while the two-hour battery life means movie fans are going to have to have it rigged up to the mains.
However, this doesn't diminish the fact that the Adapt 305 is far and away the best projector of this type I've tried.
The Adapt ADPP 305micro projector features
Projector: Dimension 110mm x 60mm x 25mm (40mm with battery)
Weight: 190 grams using mains (300 grams inc. 1 hr battery)
Projected Screen: 6 to 100 inches