Viewsonic LX750-4KE, 4000 ANSI lumens, UHD 4K (3840x2160), 1200:1, 16:9, 1524 - 7620 mm (60 - 300"), 1.49 - 9.72 m Viewsonic LX750-4KE. Projector brightness: 4000 ANSI lumens, Projector native resolution: UHD 4K (3840x2160), Contrast ratio (typical): 1200:1. Light source type: Laser, Service life of light source: 20000 h. Focus: Manual, Focal length range: 11.9 - 15.5 mm, Aperture range (F-F): 1.94 - 2.12. Supported graphics resolutions: 640 x 480 (VGA), 3840 x 2160, Supported video modes: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p. Serial interface type: RS-232, HDMI connector type: Full-size, HDMI version: 2.0b