[INSTALLATION IN SECONDS]: The anti-reflection tempered glass laptop screen protector with the tempered glass material. Please refer to the video for installation! You will not suffer the troubles with rolling up caused by the cheap plastic as the tempered glass is designed with 9H hardness will adsorbed to your laptop screen automatically. The installation is done in seconds without compliacted steps. Any questions about it, please feel free to contact us. [RELIEVE YOU FROM HAMMFUL BLUE LIGHT]: We are spending a long time on computers no matter working, studying or entertainment nowadays.You will feel eye strain and eye painful without the anti-blue light screen protector when you use laptops. To protect your eyes, GUDTEKE blue light screen protector adpots 9-layer blue light filtering technology,ensuring you can work or study for extended periods without discomfort and protect your eyes effectively. [DOUBLE-BLAST PROOF TEMPERED GLASS]: GUDTEKE aims to researched and developed a screen protector to protect the laptop screen from cracking by outside attack. Then a double-blast proof tempered glass laptop screen protector was born after hundreds of test which shows best protection compared to those cheap tempered glass or plastic protectors. It is necessary for you laptop users to get a premium laptop screen cover to avoid the repair of the expensive screen. [BRIGHTER SCREEN & COLORFUL VISUAL]: GUDTEKE 15.6 inch laptop screen protector is designed to preserve the original color and brightness of your screen with up tp 98% clear transparency while protecting the screen. Put the blue light screen protector on, it will not darken your laptop screen and provide you a colorful screen when you are enjoying a fantastic movie. Moreover, the brighter screen is perfect for those office workers to relieve them from blurry screen whenever they are. [UPGRADED ANTI-REFLECTION TECHOLOGY]: Sitting on the lawn and working in a cafe next to the window with your laptop, you are always troubled with the blinding sunlight and hard to see the screen clearly. GUDTEKE did a research on laptop users over the past years and developed a ANTI-REFLECTION laptop screen protector to solve many problems about the blurry screen under strong light environments.Choose the ANTI-GLARE screen protector , take your laptop on the go whenever you love.