native svga (800 x 600), max sxga (1280 x 1024), wxga+ (1440 x 900) computer compatibility: ibm pc and compatibles, apple macintosh, imac and vesa stds), wxga+ (1440 x 900), wxga (1280 x 800, 1280 x 768), sxga (1280 x 1024), xga (1024 x 768), svga (800x600), vga (640 x 480) video compatibility: ntsc (3.58/4.43), pal (b/d/g/h/i/m/n), secam (b/d/g/k/k1/l), hdtv (720p, 1080i), edtv (480p, 576p), sdtv (480i, 576i) aspect ratio: 4:3 (native), 16:9 contrast ratio: 2000:1 displayable colors: 16.7 million colors projection lens: f = 2.0, f = 17.67mm manual focus projection screen size (diagonal): 15" (38cm) ~ 60" (152cm) projection distance: 2.0' (0.6m) ~ 7.9' (2.4m) throw ratio: 50"@2m (1.97:1) lamp life: led life 20,000 hours keystone correction: +/-40 degrees (vertical ) weight: 0.55kg / dimension: 127 x 122 x 48.5 mm