Welcome to the store! 1、HEV Protection: The blue light computer screen filter filters out harmful UV rays and harmful blue light with wavelengths between 380 to 420 nm for broad HEV protection 2、Blue Light Blocking: Blue light blocking technology protects your eyes, sleep, and skin from the negative effects of overexposure to blue light, reducing eye strain 3、Easy to Install: The blue light computer screen filter is easy to install, just remove the film on both sides of the blue light block on the computer screen after cleaning the screen 4、Convenient and Practical: The blue light computer screen protector is not easy to produce bubbles after being hung on the screen, and it can also be removed at any time and used on other computers 5、Scope of Application: The computer screen filter is compatible with 23.6 to 23.8 inch PC screens. High light transmittance acrylic material can effectively prevent screen dust and scratches, suitable for office, home Item Type: Computer Screen Protector Product Material: Acrylic Filter Wavelengths: 380 to 420 nm blue light (useful light is not filtered), 99% UV protection Features: Easy to install, prevents eye strain 1 x Computer Screen Protector 2 x Anti-Slip Stickers 1 x Cleaning Cloth Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!