Pocket Projector for iPhone 4 is perfect for on-the-go travel entertainment. Its super-bright 15-lumen LED projector lamp ensures clearer, more brilliant images than other pico projectors. 640x360 native display resolution projects up to 50" images. Focus adjustment lets you control image clarity while the integrated 0.5W speaker delivers the audio. Great for keeping kids entertained with their favorite videos on the road! Pocket Projector for iPhone 4