1ANTI BLUE LIGHT: Our computer screen protector is designed to filter harmful blue light wavelengths between 380420nm. Advanced blue light blocking technology protects your eyes, sleep, and skin from the negative effects of overexposure to blue light. 2COMPATIBLE WITH: Made from high transparency PET material, this anti blue light screen protector is suitable for 19.5 inch 16:9 desktop computer monitors. It effectively prevents screen dust and scratches, making it ideal for students, office workers, gamers, and programmers. 3REDUCE EYE FATIGUE: Say goodbye to eye strain, blurred vision, and headaches with our blue light blocking screen protector. It provides a blue light blocker for your eyes, promoting better sleep and overall eye health. 4EASY TO INSTALL: Simple to install, just clean your screen and remove the thin film from both sides of the computer screen blue light blocker. No more bubbles, just a seamless application. 5UV FILTERING: In addition to filtering harmful blue light, our screen protector also filters 99% of harmful UV rays to help reduce eye fatigue. It offers wide ranging HEV protector for your eyes.