With a short throw ratio of .68 that allows for a 77-inch image to project at only 3.5 ft away, the ViewSonic PJD6381 features a wide range of interactive whiteboard options that can work with school districts across the country. The 3D-ready ViewSonic multimedia projector delivers superb all-digital clarity, and its 5-segment color wheel allows the color yellow to achieve vivid color reproduction. Its 1024x768-pixel XGA resolution and 2,400:1 contrast ratio helps the ViewSonic PJD6381 to display detailed images. To extend the DLP projector's lamp life, an eco-mode allows for an extra 6,000 hours, as well as reduces the lamp's noise output. Its off-to-go feature lets users to unplug the ViewSonic multimedia projector and immediately transport it without waiting for the machine to cool down. Weighing about 6 lbs, the DLP projector also offers security bar and lock port to deter would-be thieves. Additionally, the projector includes network management software, which allows users to manage their projects and send email alerts to administrators about required maintenance on the machine. Multiple presentation modes and sharp picture quality make the ViewSonic PJD6381 an ideal choice for classroom or boardroom settings.