The Proxima S520 Ultralight is a great choice for business man who travel and need portable machines. With it’s weight,it wont be a problem carrying onto a train,plane,car,and etc. The weight of this Ultralight projector is 5 pounds with, 800 ANSI lumens of brightness. The technology of the digital light shows great clarity in a small room. The Ultralight S520 gives professional presentations by the lens and remote control laser which it has. Great use for slides and flip charts.