1,Suitable Scene: Screen protector film is compatible with 13.3 inch (287.6x180mm) laptop screens. Perfect for students, gamers and programmers in their office and home. 2,Anti Blue Light: Laptop screen protector filters out harmful blue light with wavelengths between 380 to 420nm. Advanced blue light blocking technology protects your eyes, sleep and skin from the negative effects of blue light overexposure. 3,Relieve Eye Fatigue: Blue light blocking screen protector allows you to enjoy your digital time without worrying about eye fatigue and headaches, providing you with a better night's sleep. 4,Advanced Material: 13.3 inch laptop screen protector is made of highly translucent PET, effectively protects the screen from dust and scratches, sturdy and reliable for long service life. 5,Easy Installation and Bubble Free: Anti scratch screen protector is very easy to install, just remove the film on both sides of the computer screen blue light blocker after cleaning the display. Just stick it on. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.