BenQ MW516 2800 Lumen WXGA SmartEco DLP Education Projector Smart Eco mode is designed to use only the exact amount of lamp power a projector needs to deliver the best contrast performance Closed captioning and instant restart Teaching Templates for Letter Formation, Musical Staff, Worksheet and Coordinate Chart, you can easily write or draw on whiteboards as well as blackboards without the need of drawing lines or charts Cooling time has been reduced by over 60%, saving you time and minimizing the risk of heat damage to sensitive internal components