BenQ TK710STi Standard Beam Projector 3200 ANSI lumens DLP UHD 4K (3840x2160) 3D Compatibility Black, WhiteBenQ TK710STi. Projector brightness: 3200 ANSI lumens, Projection technology: DLP, Projector native resolution: UHD 4K (3840x2160). Light source type: Laser, Light source life: 20000 h, Light source life (saving mode): 20000 h. Focal length: 10.2 - 12.24 mm, Aperture range (F-F): 2.53 - 2.73, Zoom ratio: 1.2:1. Supported graphics resolutions: 640 x 480 (VGA), 3840 x 2160, Supported video modes: 1080p. Serial interface type: RS-232, HDMI version: 2.0b