Epson V11H228020 PowerLite 1715c Multimedia LCD Projector, 2700 ANSI Lumens, Contrast Ratio 400:1, 3.7 lbs, Aspect ratio 4:3 (supports 16:9, 5:4): Brightness Uniformity: (typical) 83%: Wireless 802.11a and g for up to 54 Mps even in ad-hoc mode: Screen Size: (Projected Distance) 30" to 300" (3.2' to 39.7'): Color Reproduction Full color (16.7 mil): Digital keystone correction (+/-30° vertical) automatically engages without manual adjustments: Wirelessly send MPEG2 full screen video (30 fps) with audio from a PC (V11-H228020 V11H228-020 PL1715C 1715-C PL-1715C)