Made of high quality tempered glass. 3D curved design, full screen protection. 9H hardness, super anti-scratch. High quality glass: It keeps the screen smooth and streamlined, and has been extensively tested to provide brightness and clarity High privacy: It only allows light to pass through the phone screen from certain angles, because the viewing angle in the privacy screen is set to 60 or 90 degrees, if you try to view the phone from other angles, you will not be able to see what is happening on the screen, but it will appear black to you as if it was turned off Turn it on.