Why We Need to Block Blue Light with Laptop Screen Protector? 1.In modern society, we often have to work in front of the computer continuously, which will damage our eyesight. Block blue light can effectively protect the eyesight. 2.Reduce visual fatigue when you staring screen for a long time, improve work and study efficiency. 3.Facing digital screen for a long time will cause poor sleep and even difficulty falling asleep, using blue light screen protector could help you get a better sleep. Suitable Crowd Our blue light filter can block out harmful blue Light and relieve computer eye strain to help sleep better, which is suitable for students, office staff, game lovers, fashion beauty, pregnant women and other people who use computer. If you have any questions while using the product, please contact us, we'd like to service you anytime. Features: -Anti-fingerprint and grease dirt, extra sensitive touch screen.Excellent character recognition. -Block 99% of UV and block 65% of harmful blue light between 380nm-490nm . -Reduce-Glare, help minimize annoying surface glare under bright lights. -High transmittance,The thickness of screen and the touch feeling have little change after installation. -Uniform thickness, smooth surface.The picture can be showed incisively and vividly.