LG PH550: Minibeam LED Projector With Built-In Battery and Screen Share HD (1280 x 720) Wireless Connection (with Android O/S, WiDi) Bluetooth sound out Built-in Battery (up to 2.5 hrs) 3D Compatible Up to 550 lumens 30,000 hr Lamp life (LED RGB) Auto Keystone (Vertical) Digital TV Tuner HDMI, MHL input