Benq TK850. Projector brightness: 3000 ANSI lumens, Projection technology: DLP, Projector native resolution: 2160p (3840x2160). Service life of light source: 4000 h, Service life of light source (economic mode): 10000 h, Lamp power: 245 W. Focal length range: 12 - 15.6 mm, Aperture range (F-F): 1.9 - 2.47, Zoom ratio: 1.3:1. Supported graphics resolutions: 640 x 480 (VGA),720 x 480,720 x 576,1280 x 720 (HD 720),1920 x 1080 (HD 1080),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