Features Ultra-thin glass can be treated by toughening under high temperature of 420. Convenience for the fitting and dismantling. Thickness of stress layer:12um; thickness of surface: 9H Five effect of strengthened glass membrane Super scratch resistant, wear, explosion-proof, and water-proof, anti oil Automatic exhaust bubble, bubble prevention, anti bacteria, anti glare anti radiation High sensitivity to touch The picture is clear, highlight the three-dimensional sense, improving the visual effect Long time use of the eyes is not easy to fatigue, protect eyesight better Simple and convenient usage, and no bubble. Prevent electronic waves on the human body injury. It doesn't affect the mobile phone case. Use with other mobile phone accessories.