Videoproiector shot-throw Optoma X309ST, XGA, 3700 lumeni Specifications Display/image Display technology DLP Resolution XGA (1024x768) Brightness 3,700 lumens Contrast ratio 25,000:1 Native aspect ratio 4:3 Aspect ratio - compatible 16:9 Keystone correction - vertical +/-40° Horizontal scan rate 15.38 ~ 91.15Khz Vertical scan rate 50 ~ 85(120 for 3D)Hz Uniformity 75% Screen size 0.81m ~ 6.28m (31.9" ~ 247.3") diagonal Lamp info Light source type Lamp Lamp watts 203 Lamp life hours (up to) 6000 (Bright), 12000 (Dynamic), 10000 (Eco), 15000 (Eco+) Optical Throw ratio 0.617:1 Projection distance (m) 0.4m - 3.1m Focal length (mm) 7.15mm/0.281" Native offset 115% Connectivity Connections Inputs 1 x HDMI 1.4a 3D support, 1 x VGA (YPbPr/RGB), 1 x Composite video, 1 x Audio 3.5mm Outputs 1 x VGA, 1 x Audio 3.5mm, 1 x USB-A power 1A Control 1 x RS232 General Noise level (typical) 26dB Noise level (max) 28dB PC compatibility FHD, UXGA, SXGA, WXGA, HD, XGA, SVGA, VGA, Mac 2D compatibility NTSC M/J, 3.58MHz, 4.43MHz PAL B/D/G/H/I/M/N, 4,43MHz SECAM B/D/G/K/K1/L, 4.25/4.4MHz 480i/p, 576i/p, 720p(50/60Hz), 1080i(50/60Hz), 1080p(50/60Hz) 3D compatibility Side-by-Side:1080i50 / 60, 720p50 / 60 Frame-pack: 1080p24, 720p50 / 60 Over-Under: 1080p24, 720p50 / 60 3D Full 3D Security Security bar, Kensington Lock, Password protected interface OSD / display languages: Romanian Operating conditions 5°C~40°C/41°F~104°F, max altitude 3000M/9843ft, max humidity 85% Remote control Card style Speak