The vpl sw225 short throw projector has a number of features to present high quality images while keeping low tco this includes brightness of 2600 lumen constant brightness function extends the brightness of the projector over a long period of time while energy efficient technologies extend lamp replacement time in low mode the projector also needs only 79 cm to display a large 80 inch image on the screen which fits perfectly in front of a white board leaving plenty of space with the fuss