Bright, vivid content on a large scalable screen Enjoy large scale presentations with crisp, clear text, as well as compelling imagery and video content on screen sizes up to 320 inches. 3,500-lumen performance combines with a high contrast ratio of 15,000:1 to offer outstanding visual performance, even in well-lit rooms. Years of uninterrupted meetings With a lamp life and air filter maintenance cycle of 12,000 hours in eco mode, users won\'t need to worry about maintenance for more than 5 years . Installation and placement flexibility Automatic vertical and manual horizontal keystone correction provide greater flexibility as to where the projector can be placed in the room for distortion-free images and the wide optical zoom adds to the flexibility. Network and Wi-Fi capability Wi-Fi compatibility and network capability (via RJ45) mean the EB-W39 can be added to a company network or upgraded for wireless device access at a later stage (optional accessory required). High-quality sound This projector has a built-in 5W speaker to allow audio content to be heard clearly, without the need for additional external speakers.