Reality Enhancement Glasses - Generation 0

I have a sudden urge to write an essay (for my fiction blog) on my idea for Reality Enhancement Glasses (mentioned here in a tangentally related essay). When I think of them, I picture something that looks about like this. Now, the Razrwire glasses are just a blue-tooth earpiece mounted on sunglasses. But make the lenses a fully functional screen that overlays information onto the real world, put a camera in between the lenses, build a GPS into the accompanying phone, add internet access, and you have the makings of Reality Enchancement Glasses. No biggie.