Do you think that having to lift your arm in order to tell the time on your watch is troublesome? Perhaps this 4D concept watch might be able to solve your problem. This watch is able to display the time based on gravity or depending on the head position of the person whose wrist the watch is on. With this, all you have to do is look down at your arm and you’ll be able to tell the time, ensuring that you won’t have to exercise the muscles on your arm unless you absolutely want to (yes, we’re lazy). The two buttons to the side of the display control the functions of this watch and the watch itself looks fashionable too.