Best Projectors - 34 to 42 dB Operation Noise, 480p HDTV Formats, 600:1 Contrast Ratio

'the NEC VT491 LCD Projector is bright enough for conditions with ambient light sources (like classrooms).'

'the NEC VT491 LCD Projector is bright enough for conditions with ambient light sources (like classrooms).'

'high performance and flexibility'

'the NEC VT491 LCD Projector is bright enough for conditions with ambient light sources (like classrooms).'

'A removable palm-sized control panel on the projector is specially designed with a self-assigned password for theft prevention.'