3D may be all the rage, but 4D is better and more practical. At least when it comes to watch design anyway. Forget having to lift your arm in order to tell the time on this watch. You don’t even need to bother. Your arms are probably flabby anyway. This 4D concept watch can display the time based on gravity or depending on the head position of the person whose wrist it’s on.
All you need to do is look down at your wrist and you’ll be able to see the time. Soon you won’t have any arm muscles at all. The two buttons on the side of the display control the functions of the watch.