Lookatool for iPhone 6s 4.7inch Explosion-proof Full Coverage Tempered Glass Film Protector (White) Retina and HD SuperAMOLED compatible high quality screen protector for iPhone 6S 4.7Inch. Light Penetration Ratio 93.7% (Comparison: Glasses 92%, General protective film 80%) The surface of the tempered glass has a hardness of 8-9H and 0.3mm thick, three times stronger than a regular screen protector film. Even objects such as knives and keys will not scratch the tempered glass. The tempered glass screen protector has a strong adhesive that makes installation easy and attaches the film firmly so as to not affect the touch screen's sensitivity. 9H Strong Hardness Anti-Scratch: The World Best! Real tempered glass protector. 9H Strong Hardness Anti-Scratch: The World Best! Real tempered glass protector The Premium Tempered Glass has an oleophobic coating that prevents fingerprints and other contaminants.