The thing about personal media viewers - the defining characteristic in fact - is that they let you enjoy a movie while completely blocking out everything around you. The ST1080 is different. It features a pair of 1080p resolution screens - one for each eye - that are capable of displaying both 2D and 3D content. What's really unique about them is that you can see right through the ST1080, allowing you to keep an eye on your surroundings. It's the first consumer media viewer to offer this feature.
One particularly nice feature of the ST1080 is that it's powered by USB instead of by a traditional plug-in power source. That means you can hook it to a laptop or a portable battery instead of having to sit right next to an outlet. The ST1080 will go on sale this December with a price yet to be announced.