The CS322 is designed for business and education, provides 3600 lumens of brightness and SVGA image quality, offers necessary functions and best value. The best choice in medium-sized spaces with this projector. Perfect for lights on viewing and a vibrant picture for all conditions. Add more depth to your image with outstanding colors and exceptional black and white contrast performance. The image comes alive and text appears crisp and clear. Via the extended Lamp Life Mode (Eco+), to maximum the projector efficiency with Low TCO. The built-in USB power output (5V/1.5A) can be utilized to provide power for your streaming dongles such as Chromecast, HD Cast Pro, or mobile devices. Charge your mobile devices simply by plugging in your USB charging cable. With an optional HD Cast Pro dongle, you can wirelessly connect to your laptop, tablet or mobile device and share your streaming videos, photos or documents to the big screen. Especially designed for business and education environments, up to 4 computers can project the content simultaneously. AA powerful integrated 10W speaker allows your content to be heard clearly and is easy to set up without purchasing external speakers.