Material: optical glassHardness: 8HTransmittance: >90%Thickness：0.33mmFunction:1 to effectively prevent the liquid crystal screen scratches and wear;2 anti-static， not easy to be stained Juchen;3 the use of advanced coating technology， direct touch is not easy to leave fingerprints;4 have special anti reflection， glare function， eliminating the 98% external environment of the reflection light， strong glare.