It places two tiny OLED (Organic Light Emitting Diode) screens, one in
front of each eye, each with individual focus controls and diopter
adjustments to create the illusion that you are watching one enormous
screen. But this device is the size of a pair of sunglasses - a fairly
ugly pair of sunglasses it has to be said, but almost as portable and
compact. There's even a pair of in-ear headphones wired into the arms to
complete the cocoon-of-entertainment effect.