A couple years ago we saw Epson's Moverio make its debut. It was kind of like a double-eyed Google Glass, but it had a lot of issues. It was bulky, it was dim, it didn't have any sensors. Basically, it didn't do much. Today, the BT-200 is here, and it's undeniably much, much better. The only question is, who's it for?
Let's start with the upgrades. Compared to the 100, the BT-200 is 60-percent smaller, with a screen that's twice as bright. It now has a front-facing camera with an indicator light to keep you from being a creep-wad. It also finally has all of the sensors it needs to be a legit augmented reality machine, including an accelerometer, gyroscope, and a compass. In other words, you can now use your head as a controller, looking around to pan around a 3D world, which feels very natural. Additionally, it can act as a wireless display (it's not yet Miracast certified, but that's what it'll be), so you'll be able to beam content to/from other connected devices.
The unit is composed of three pieces. There are the glasses, which are big, clear, and, frankly, make Google Glass look like haute couture. There's a projector on each side of your face, which beams images through prisms and into your eyes at a qHD resolution (960 x 540 pixels). Then there's a little, boxy, hand-held controller that's wired to the glasses. It's kinda like an Android phone, but without the screen. It has a touchpad with home/back/menu buttons, though, and it does indeed run Android 4.2 (Jelly Bean). That's essentially how you select things, click, and stuff like that. Then there's a little unit in the middle with a headphone jack (the glasses have no built-in audio).
The experience of using it is somewhere in between Google Glass and the Oculus Rift. It's more virtual-reality-ish that Glass, because the image is directly in the center of your vision, and because it overlays information onto what you're seeing around you. At the same time, because it's just a small image, and because you can see the outside world, it's far less immersive than the Oculus.