The spectacle is truly incredible easy, works by not particularly valuable and durable, but wears very well. Even after the movie I hardly felt a really comfortable fit, and that's the most important thing. But of course you have to be very careful with this featherweight, all the more galling is that apparently in contrast to its predecessor are not accompanied by transport box that would have been very helpful, that is bitter is. For this you just have to at this price to deduct a star, sorry. The visual impression is very good, though with this model, the picture is a good deal darker through the glasses. But that's probably normal and the predecessor apparently significantly worse. The 3D certainly works very well together with my 50-inch Panasonic. There are the glasses in several sizes, selecting the right size is of course particularly important. You read that from 55-60 cm head circumference M should be correct, about 60 cm then L can come into question. I once got acquainted. My head circumference is measured 59 cm, hence certainly rather large and suitable to my 2m height. Nevertheless, I ordered M, down just right. The spectacle is secure, but definitely not too tight. L would have been really too far and only comes about 60 cm in question.