Vivitek DU3661Z Vivitek DU3661Z data projector 5000 ANSI lumens DLP WUXGA (1920x1200) Native Resolution WUXGA (1920 x 1200) Brightness 5000 ANSI Lumens Contrast Ratio 20,000:1 Max. Supported Resolution WUXGA (1920 x 1200) @60Hz Native Aspect Ratio 16:10 Lamp Life and Type Lamp free design. Laser light source lasts up to 20,000 hours Display Type Single chip DLP® Technology by Texas Instruments Throw Ratio 1.39 - 2.09 : 1 Projection Lens F = 2.42 - 2.97, f = 20.7 - 31.05 mm Zoom Ratio 1.5x Lens Shift Range Vertical: +11.7% Offset 108.5% - 120.2% with Manual Lens Shift Keystone Correction Vertical: +/-30 Steps; Horizontal: +/-30 Steps Speakers 10W x 1