Acer P1357Wi. Projector brightness: 4500 ANSI lumens, Projector native resolution: WXGA (1280x800), Contrast ratio (typical): 20000:1. Light source type: LED, Lamp power: 203 W, Lamps quantity: 1 lamp(s). Focal length range: 21.88 mm, Throw ratio: 1.21 to 1.57 (1955.80mm@2000mm). Analog signal format system: NTSC, PAL, SECAM. Projection modes: Front