E city purchased the projector professional brand sales Optoma HD50 detailed parameters of the main parameters of the projector interface parameters Electrical Specifications Other parameters Warranty Information Specifications Product type home projector 3D projectors feature DLP projection technology display chip DMD chip 0.65 inches brightness 2200 lumens even 85% of the value of the contrast 50000: 1 Standard resolution 1920 * 1080 projection parameters manually zoom Focus Mode Manual Focus Zoom ratio 1.5X zoom range Aperture F = 2.42-2.97 actual focal length f = 20.7-31.05mm projection ratio of 1.39-2.09: 1 1.2-10m Projection Distance Projection size 30-300 inches Screen ratio 4: 3/16: 9 Number of colors 1.07 billion colors axis (called partial-axis) 110-124% Keystone Vertical: ± 15 degrees Computer Compatibility 1080P, UXGA, SXGA + , SXGA, WXGA, 720P, SVGA, VGA Compression, VESA standards, PC & Macintosh compatible Video Compatibility HDTV (720p, 1080i / p), SDTV (480i / p, 576i / p), NTSC, PAL, SECAM interface parameter input interface 2 × HDMI 1 × VGA 1 × 1 × Component Video Composite Video Output Interface 1 × 12V Trigger 1 × 3D SYNC control interface 1 × RS232 1 × USB-B 1 × USB-A Electrical Specifications Power 240W power supply noise 29dB performance AC100- 240V, 50 / 60Hz Other parameters Size 286 × 265.5 × 124mm Product Weight 2.7kg Correction warranty information warranty policy Genius, enjoy Warranty Services warranty time 2 years