About this item Effective Anti-Blue LightThis blue light screen protector features a layered anti-blue light design and multi-layer blue light filtering that effectively blocks harmful blue light, even during extended computer use. Better eye protection means reduced eye strain and fewer headaches. Perfect CompatibilityThis laptop screen protector is specially designed to fit all brands of 17.3-inch laptops with a 16:9 aspect ratio. Please ensure that you clean your screen thoroughly before installation to achieve the best results. Multifun ProtectionIn addition to its blue light protection, this anti-glare computer screen cover offers dual protection for your computer. It also protects your screen from scratches, providing extra peace of mind when using your device. The anti-glare feature helps to eliminate annoying screen glare and delivers an unparalleled visual experience. Perfect for TouchscreensOur computer screen blue light blocker works great on touchscreen laptops without any