Optoma EH330UST DLP Full HD Ultra Short Throw ProjectorEH330UST Lights on viewing bright 3600 lumens Super sized 100 inch images placed 30cm away from a flat surface or screen Long Lamp Life Maximum 15000 hours lamp life by using Dynamic mode Lightweight Design less than 4kg, makes you much easier to install and set up at home Multiple present functions includes Split Screen, Sketch Function, and Blackboard Mode. Ultra Short Throw Lens Design With an ultra short throw lens, you can project an impressive