Brand Name: OPTOMA Model No: S341 Resolution:  SVGA 800 x 600 Brightness1 (Bright Mode): 3500 ANSI Lumens Contrast: 22,000:1 Throw Ratio 3: 1.94 - 2.16:1 Zoom Type: 1.1x Manual Easy connectivity - HDMI, VGA, USB-A Power, 2W speaker Projection Screen Size: 0.71 - 7.73m (27.78" - 304.4") Diagonal 4:3 Projection Distance: 1.2 - 12 metres Projection Lens: F/2.4~2.53; f=21.85~24.01mm Warranty: 2 years on Projector; 1 year or 1000 hours on lamp