The google glass explorer edition was officially announced today at google I/O. They have a gyroscope, accelerometer, compass, camera, video recorder, audio recorder, microphone, a powerful processor, and a few other features all inside a very lightweight aluminum body. Approved developers for android can buy one of these for around $1,500 and it will arrive at their doorstep sometime in 2013. The image above is a picture of the presentation. You can see the woman in the presentation wearing a prototype.