Acer Short-Throw Projector - White Native Resolution: WXGA (1280 x 800) Maximum Resolution: UXGA (1600 x 1200) Maximum Wide Resolution: WUXGA (1920 x 1200) Contrast Ratio: 13,000:1 Brightness - ANSI Lumens: 3,200 standard, 2,560 economy Projection Lens: F = 2.6, f = 6.90mm; manual focus Projection Screen Size: 47" (120cm) 300" (762cm) Projection Distance: 1.6' (0.5m) 10.4' (3.2m) Throw Ratio: 87" @ 92cm (0.49:1)