So the most comparable product of theirs is the Wrap 920AR. There are a differences in terms of specs: 1) higher resolution displays (800x600 rather than 640x480), 2) higher resolution cameras (hopefully hitting 1024x768 with the initial CMOS sensors, but that one's up in the air; mostly just a matter of figuring out which one will be the best cost-wise in production), 3) visual processing happens on the glasses rather than on the PC.

However, these differences pale in comparison to the difference in underlying technology. Rather than having displays in front of your eyes that are fed data from the cameras as with Vuzix' tech, we're using Eyetap technology. What this does is feed natural light straight into your eye after it's gone through a beamsplitter to be sent into the camera. On the other side of the beamsplitter is a display showing you overlays. This means that there's no "reality lag", and that you can do far nicer overlays.