It has front and rear facing 3D cameras for tracking motion of both the scenery and the user. Together they can create fully tracked augmented reality, and couple with a 3D screen that needs no glasses, everything will look as if it is actually there.
The screen is also totally transparent. All the electronics are held in the tiny multifunctional on/off button, thanks to advances in microscopic electronic components."
'Please don't ever let this be a windows phone'