The BenQ MX661 is just the projector you need to perfect your presentation in all settings. Featuring XGA resolution with 3000 ANSI lumens and 13000:1 high contrast ratio, the MX661 also offers multi display for ultra-smooth connection, PC-less presentation and 3D ready projection to keep your presentation looking" great! World-Leading Smart Eco Technology for a Greener Environment As the first DLP brand to incorporate Philips" Image Care technology into its projector lamp system, BenQ 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 brand new invention, the MX661 brings together uncompromised brightness, exquisite picture quality and optimized lamp life through innovative features. The Eco Blank mode allows teachers to blank the projection screen whenever they need to direct their students" focus back on them -or simply when the projector is not in use. When activated, this special feature dims the lamp power automatically, lowering the total power consumption by 70%. The Smart Eco Mode, which cleverly adjusts the lamp power to maximize power saving by delivering the best contrast and brightness performance using only as much light as needed. The automatic switch to Eco Blank Mode after the projector is turned on for over three minutes without a display source, eliminating unnecessary energy waste and prolonging the life of the projector lamp. Audio Pass Through With the built-in speaker, the MX661 can be used as an audio system when it"s on the standby mode. This saves you the trouble as well as the extra budget for getting a separate audio system.0.5W in Standby Mode When inactive, the MX661 keeps power consumption to a minimum with 0.5W standby power, achieving what was once a challenge for earlier projector models. This technological advancement in energy saving certainly helps extend the projector lamp life and lower energy costs.