... turn on/off the projector anytime ,no need time for projector to cool down as traditional metal halide lamp projector ... fine resolution ,sharp image.6.Max 150inch image, enough for home, small meeting room, small classroom and entertainment sites. ... home theaters, business presentations, meetings, KTV video entertainment, Multi-media teaching; Nightclubs, Video Game (PS2/PS3/XBOX360...)and PC Games; ...