BenQ MX615, 2700 ANSI lumens, DLP, XGA (1024x768), 3000:1, 4:3, 24 - 300" BenQ MX615. Projector brightness: 2700 ANSI lumens, Projection technology: DLP, Projector native resolution: XGA (1024x768). Light source type: Lamp, Service life of light source: 3500 h, Service life of light source (economic mode): 5000 h. Focal length range: 21 - 23.1 mm, Aperture range (F-F): 2.56 - 2.8, Zoom type: Manual. Analog signal format system: NTSC, PAL, SECAM, Supported video modes: 1080i, 1080p, 480i, 480p, 576i, 576p, 720p. Serial interface type: RS-232