So, if I'm awake by the blue light technology over emphasize every time, I now can not necessarily festellen. But, it's really true that one's eyes are not as fast and hard, accordingly tired. I sit often in the evening with my smartphone and still play a few games and I do not fall for the eyes. The colors are in my opinion not distorted, everything looks great. From me a strong buy recommendation. Can also be super easy to work with. Whether the bulletproof glass delivers what it promises - which I have not tried ;-) And for the price I have to say - I was worth the slightly higher price. I buy a smartphone for a few hundred euros as it should me be worth buying a decent film and bag.