Projection can be an irritation for regular business presenters. When it works well, it's a dream, but too often, hiccups and glitches get in the way. As a result, some people prefer to carry their own equipment rather than rely on what they might find at their destination.
The Nebula Capsule II is the latest iteration of the portable projector from Nebula, an Anker brand. In the US you can buy the Capsule II off the page from Anker/Nebula for $579.99, but choices are more limited in the UK: Selfridges is currently the only official UK stockist, where it will cost you £499 (inc. VAT).
Anker Nebula Capsule II review at ZDNet