Designed for disruption-free learning in small-sized classrooms, the MX813ST offers an 81" XGA picture in only 1 meter with a 0.6 ultra short-throw ratio. Together with 10000:1 ultra-sharp contrast ratio & 2700 ANSI lumen brightness, this projector has the most dynamic image quality to offer! As the first DLP brand to incorporate Philips Image Care technology into its projector lamp system, Ben Q has taken a further leap, developing its own Smart Eco Technology to perfect what DLP can do for energy saving in the 21st century classroom. Built with this invention, the MX813ST brings together uncompromised brightness, exquisite picture quality & optimized lamp life through innovative features.