DELL S500WI, 3200 ANSI lumens, DLP, WXGA (1280x800), 2300:1, 1955.8 - 2540 mm (77 - 100"), 0.49 - 0.66 m DELL S500WI. Projector brightness: 3200 ANSI lumens, Projection technology: DLP, Projector native resolution: WXGA (1280x800). Light source type: Lamp, Service life of light source: 2500 h, Service life of light source (economic mode): 3000 h. 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 800 (WXGA), Supported video modes: 1080i, 1080p, 480i, 480p, 576i, 576p, 720p. Serial interface type: RS-232. Optical disc player type: Not included Dell’s S500wi is an ultra-short-throw projector aimed at those needing a large projected display in a relatively confined space. It shares many of the underpinnings of the S300wi we reviewed in 2010, including the interactive whiteboard mode. This make... Good picture quality; quiet; can be positioned exceptionally close to the screen; four-way split screen capability; comprehensive choice of inputs Limited maximum screen size; interactive mode requires cable between projector and PC A very good HD projector with great close-range performance and versatile interactive features. If you need a very large display, however, the S300wi is a better choice.... If you want an interactive 3D projector but you're struggling to get a decent-sized projection display in a confined space, Dell's S500wi could be the answer... Incredibly short projection distance, Bright, Surprisingly quiet, Good sound from internal speakers Bulky, Mirror attracts dust, Short usable projection range, 100in. maximum screen size