BLOCK BLUE LIGHT: This computer blue light screen protector filters harmful blue light between 380 and 420nm. Advanced blue light blocking technology protects your eyes, sleep, and skin from the negative effects of excessive blue light exposure. SCRATCH & DUST RESISTANT: Compatible with 23.6in (522x294mm) desktop computer monitors, this blue light screen protector is made of highly transparent PET to effectively prevent screen dust and scratches. Perfect for students, office workers, gamers, and programmers at the office or at home. HEALTH PROTECTION: With this PC eye protection filter film, enjoy your digital time without worrying about eye strain, blurred vision, and headaches. Provides blue light blocking for your eyes to protect your health. EASY TO INSTALL & BUBBLE-FREE: Very easy to install. After cleaning the monitor, simply remove the film on both sides of the computer's blue light blocker and stick it on. UV PROTECTION: The screen protector also filters out 99% of harmful UV rays. Reduces eye strain with a wide range of HEV protection. Item Type: Computer Blue Light Blocking Screen Protector Material: PET Product Size: 23.6in Package Includes: 1 x Protective Film 1 x Dust Wipe 2 x Viscose 12 x Double-Sided Tape