This EB-955W offers increased lumens & features including color universal design (CUD), HDMI input, A/V mute & a horizontal keystone slider. An equally high white & color light output delivers up to three times brighter colors, which means you don't need to close the blinds, even in daylight. They are easy-to-use & have an enhanced 10, 000:1 contrast ratio, creating crisp, clear images. More control & collaboration Eco-friendly features Easy-to-use An equally high white & color light output HDMI input enhanced 10, 000:1 contrast ratio More control & collaboration The moderator function on the EB-955W enables PCs & smart devices to easily connect to the projector, while the teacher or meeting host controls the projected content. It ensures the presenter can easily manage how & when content is shared & up to 50 people can connect at one time. Eco-friendly features To help reduce environmental impact & save money in the long term, this series features an eco tab in the menu screen, where you can set & display all eco features in one place. The auto lamp dimming function adjusts the brightness of the lamp in line with the brightness of the image being displayed, which offers benefits in terms of reduced power consumption & therefore bills & environmental impact as well as delivering improvements in terms of contrast ratio. The A/V mute function & sleep mode allow the projector to enter into a super low brightness setting, reducing the lamp wattage by 70 percent in the process. Easy-to-use The HDMI input support means that high-definition video & audio are played easily, whether the projector is used for business, in education or for entertainment. Positioning flexibility is delivered through Epson's unique horizontal keystone slider & automatic vertical keystone correction, so you always get a square image. Once in position, thanks to Epson's color universal design (CUD), colorblind users can easily view & operate the control panel. The LED colors & clear, intuitive menu icons on the projectors' control panel means operation is straightforward for all users.