Nokia Lumia 820 with chargeable cover and removable mini projector

grabcad

It can be used for nice quick office presentation or to watch a movie with your family in your bed room projected on the wall with buying an expensive projector. The case can be charged separately which shows its level of charge with lights as indicators. You can charge the phone with the case whenever you want. There is a switch to operate this switch either charge or dont charge the phone