Check out the Magic Mirror cell phone concept that hides all the internal electronics within the glass sphere, where two displays show all the relevant information when and where required.
Animated realistic changes between chronometer, magnifying glass, mirror, compass, news box, phone, media player, TV create the feeling of the following: if it is not a magic, it’s a little wonder. For example, the change to the mode of operation “ON” is dark background, the point of light at the center of opening aperture (diaphragm); then you can see the whole indicator panel of chronometer. And even the small shadow gets a move on with second hand.
I wonder how much something like this will cost should it ever be mass produced.