Feature: 1. BLUE LIGHT FILTERING: Computer screen protector filters out harmful blue light with wavelengths between 380‑420nm. Advanced blue light blocking technology protects your eyes, sleep and skin from the negative effects of blue light overexposure. 2. WIDELY APPLICABLE: Screen protector is made of highly translucent PET, which effectively prevents screen dust and scratches. Perfect for students, OLs, gamers and programmers in their offices and homes. Compatible with 23.8 inch (528x297mm) desktop computer screens. 3. EYE PROTECTION: Enjoy your digital time without worrying about eye strain, blurred vision and headaches. Provide you with a better night's sleep, blue blocker for your eyes and protection for your health. 4. EASY TO INSTALL: Computer blue light screen protector is very easy to install, after cleaning your monitor just remove the film on both sides of the computer screen blue light blocker and stick it on, no air bubbles. 5. UV FILTERING: The Blue light blocking screen protector panel filters 99% of harmful UV rays. To help reduce eye strain. Used for a wide range of HEV protection. Specification: Item Type: Computer Monitor Blue Light Blocking Screen Protector Material: PET Ratio: 16:9 Product Size: 23.8 inches (528x297mm / 20.8x11.7in). Package List: 1 x Protective Film1 x Dustless Cloth2 x Adhesive12 x Double Sided Adhesive Note: All data are measured manually, and there are certain errors in the measurement results.