DELL 4320, 4300 ANSI lumens, DLP, WXGA (1280x800), 2000:1, 16:10, 922 - 9194.8 mm (36.3 - 362") DELL 4320. Projector brightness: 4300 ANSI lumens, Projection technology: DLP, Projector native resolution: WXGA (1280x800). Light source type: Lamp, Service life of light source: 2000 h, Service life of light source (economic mode): 2500 h. Focal length range: 18.2 - 21.8 mm, Aperture range (F-F): 2.4 - 2.66, Throw ratio: 1.28 -1.536. Analog signal format system: NTSC 4.43, NTSC J, NTSC M, PAL 60, PAL B, PAL D, PAL G, PAL H, PAL I, PAL M, PAL N, PAL Nc, SECAM..., Supported graphics resolutions: 1280 x 720 (HD 720), 1920 x 1080 (HD 1080), Supported video modes: 1080i, 1080p, 480i, 480p, 576i, 576p, 720p. Serial interface type: RS-232, USB connector type: Mini-USB B, USB Type-A, USB Type-B https://www.pcmag.com/article2/0,2817,2455029,00.asp If you need a WXGA (1,280-by-800) projector for business or educational use that's light enough to carry with you and bright enough to throw an image suitable for a mid- to large-size room, add the Dell 4320 ($1,499) to your list of potential choices. Rat... High brightness, at 4,300 lumens. Reasonably high-quality data and usable video. Light. Comes with carrying case. 3D support for computers only Light enough to carry as a regular traveling companion for business, the Dell 4320 projector delivers a bright image, WXGA (1,280-by-800) resolution, and near-excellent data image quality....