Benq HT5550. Projector brightness: 1800 ANSI lumens, Projection technology: DLP, Projector native resolution: 2160p (3840x2160). Light source type: Lamp, Service life of light source: 4000 h, Service life of light source (economic mode): 10000 h. Focal length range: 14.3 - 22.9 mm, Aperture range (F-F): 1.81 - 2.1, Zoom ratio: 1.6:1. Supported 3D formats: Frame packing, Side by side, Top and bottom, Supported graphics resolutions: 640 x 512, 640 x 640, 640 x 160, 640 x 352, 640 x 360, 640 x 400, 640 x 480 (VGA), 640 x 544, 640..., Supported video modes: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p. Serial interface type: RS-232, HDMI version: 2.0a