1.Anti-spy,viewing angls 60 degree 2.Anti-glare,.Anti-scratch 3.8.9"-21" 4. ... , hardness coating 4H4.color: pink, white, blue, black.5,Types:180 degree anti-spy (anti-spy on the hirozontical direction); 360 ... degree anti-spy (anti-spy on the hirozontical and vertical direction.) ...