Check out this cool concept e-paper bracelet from design firm Chocolate Agency.

Cool Concepts - E-Paper Bracelet Video Player

It fits on your wrist and displays the time and date, unroll it and you have a fully functional MP4 video player.

Cool Concepts - E-Paper Bracelet Video Player

The cool part about this concept is that it doesn’t use any batteries instead it is powered by kinetic energy.

via Yanko Design