Glass is basically a small computer, with a camera and a display screen above the wearer's right eye. The device sits roughly at eyebrow level, higher than where eyeglasses would go.
It lets wearers surf the Web, ask for directions and take photos or videos. Akin to wearing a smartphone without having to hold it in your hands, Glass also lets people read their email, share photos on Twitter and Facebook, translate phrases while traveling or partake in video chats. Glass follows some basic voice commands, spoken after the worlds "OK, Glass."
The gadget itself is not changing with this announcement. Rather, Google plans to make various attachments available. Starting Tuesday, the Mountain View, Calif., company is offering four styles of prescription frames and two new types of shades available to its "explorers" - the people who are trying out Glass. The frames will cost $225 and the shades, $150. That's on top of the $1,500 price of Glass.
