Sharp PG-D3750W, 3700 ANSI lumens, DLP, WXGA (1280x800), 15 - 110 kHz, 45 - 85 Hz, Lamp Sharp PG-D3750W. Projector brightness: 3700 ANSI lumens, Projection technology: DLP, Projector native resolution: WXGA (1280x800). Light source type: Lamp, Service life of light source: 2000 h, Service life of light source (economic mode): 3000 h. Focus: Manual, Focal length range: 21 - 24.2 mm, F-number (relative aperture): F 2.5 - 2.7. Serial interface type: RS-232. Noise level: 37 dB