BenQ MX823ST, 3200 ANSI lumens, DLP, XGA (1024x768), 13000:1, 4:3, 60 - 300" BenQ MX823ST. Projector brightness: 3200 ANSI lumens, Projection technology: DLP, Projector native resolution: XGA (1024x768). Light source type: Lamp, Service life of light source: 4000 h, Service life of light source (economic mode): 5000 h. Focal length range: 0 - 6.9 mm, Aperture range (F-F): 0 - 2.6, Zoom ratio: Fixed. Analog signal format system: NTSC, PAL, SECAM, Supported graphics resolutions: 1600 x 1200 (UXGA), 640 x 480 (VGA), Supported video modes: 1080i, 1080p, 480i, 480p, 576i, 576p, 720p. Serial interface type: RS-232, USB connector type: Mini-USB B