Megoo Surface Book Screen Protector 13.5",Blue Light Blocking Tempered Glass/Protect Eyesight/9H Hardness, Also for Microsoft Surface Book 2 (2017 Version) /Not for Surface Book 3

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About Megoo Surface Book Screen Protector 13.5",Blue

This Microsoft Surface Book 1/2 13.5 inch screen protector is made of premium tempered glass, with special coating to filter harmful blue light. It protects surface book from normal usage and protects your eyes. What's the difference between HD clear version and Blue Light Blocking Version? The shiny surface of Blue Light Blocking glass is special coating to block blue light. It reflects light when under sunshine. The color is with a little blue. Blue Light blocking version is suitable for the people who long time use surface to work, and eyes are easy to get tired. It will protect your eyes. It is not suitable for people who need to use surface outdoors, and are very sensitive on color and clarity.  About Blue Light Visible light wavelength from 400 Nanometers to 700 nanometers, comes from all kinds of screens, cell phones, tablet pc, computers, TVs. 400-450 is blue light. Blue light can reach the retina, may cause myopia and excitable brown pigment; If reach your skin, may cause chloasma and freckle. Blue light blocking tempered glass is a development of screen protector with special coating, preventing the harm of the blue light. It filters 90% over of 380-420nm blue light and 60% of 420-450nm blue light.   Package Includede:   1x GLASS Screen Protector, Accessories kit