Use of glasses along with a BenQ projector. The 3D experience is excellent. I also have the relation to other ShutteBrillen the blue or yellow varieties which are in the higher price segment distinct. Only the slightly larger glass making itself a positive impact. But at this price a really good and useful glasses. Also through to dark glasses, I can not complain at all. The fit is good. I have in regular use and can detect the glasses have a good year nothing negative.