Experience bright, crystal clear 40" HD 1280 x 800 projections from a distance of only 1 meter. At this size, even 8-point fonts can be seen and read clearly. The use of an energy-efficient LED light source delivers a 10x longer lifespan along with bigger savings. Additionally, it also ensures whisper-silent operation.ASUS Set-n-Go technology for instant on/off, instant height adjustment, and auto keystone correction for quick, easy use. It tips the scales at just 415g, and has dimensions similar to a CD case. Its compatibility with most ASUS laptop power adapters makes it the ideal ASUS business combo.