The high contrast ratio makes the darker areas in your images even darker, making them more detailed. The BENQ MW632ST has a high brightness of 3200 lumens. Therefore, there will be no need to rush to the back of the classroom and turn the lights off, simply project with the lights on and the whole class will still be able to see the image clearly. The MW632ST has a very long lamp life of 10,000 hours ensuring reliability. It is a widescreen projector which is great as most sources are now widescreen so you can project with the same quality without any alterations. This is a lightweight projector so it will be easy to carry to different classrooms. The Eco Blank mode allows teachers to blank the projection screen whenever they need to direct their students’ focus back on them – or simply when the projector is not in use. When activated, this special feature dims the lamp power automatically, lowering the total power consumption by 70%. This will lower your maintenance costs. There is HDMI connectivity allowing you to connect to nearly all sources showing your content in high definition. Watch a video from a DVD player with no problem. There are two HDMI ports and one with MHL so you can present in high definition from your mobile device.