Japanese company Sanwa has unveiled its 400-PRJ011 pico projector for the iPhone 4 and 4S. Using DLP technology, it can throw images on to a wall up to 65-inches in size with a 640x360 resolution and 1000:1 contrast ratio. Unusually, but usefully, the device will also double as a charger using its 2,100mAh battery to provide juice for a userís iPhone when not in projector mode.
