1、ENHANCED PRIVACY AND WIDESPREAD USE: After the installation of the privacy film, the front of the screen has a 60° viewing area, making the front of the screen clearly visible. Viewed from both sides of the computer (30°‑60° angle), which will appear very dark, you can not see the screen content, effectively prevent office colleagues from peeping and leaking office data, and always protect your privacy. Very suitable for use in planes, subways, airports and public places 2、BLUE LIGHT AND UV RESISTANT: The computer blue screen protective film can filter harmful blue light between 380 and 420nm. Advanced blue light blocking technology can protect your eyes, sleep and skin from the negative effects of excessive exposure to blue light. Screen protectors can also filter 99% of harmful UV rays to help reduce eye strain for a wide range of HEV protecting 3、HIGH LIGHT TRANSMITTANCE: Compatible with 13.3inch(312x190mm) computer monitors. Blu ray display screen protector is made of high light transmittance acrylic, which can effectively prevent screen dust and scratches. Ideal for students, OL, gamers and programmers in the office or home 4、LESS EYE STRAIN AND BETTER SLEEP: The computer screen privacy filter give you peace of mind to enjoy your digital time without worrying about eye strain, blurred viewing and headaches. Give you better sleep, give your eyes blue protectors, and protect your health 5、EASY TO INSTALL WITHOUT BUBBLE: Very easy to install, after cleaning the display just remove the film on both sides of the blue ray protector of the computer screen and hung the protector on the display. No paste, no bubbles. Can also be taken off at any time, hanging on other computers to use, compared with the adhesive prevent peep film, easier to install, not a one time, hanging can be used, the material uses acrylic plate, more textured Item Type: Computer Screen Privacy Filter Material: Acrylic Suitable Computer Display Size: Approx. 312 x 190mm / 12.28 x 7.48in Privacy Filter: 30 Degrees left and right non visible Blue Light Built in Polymer Lithium Battery: 30mAh Compatibility: Perfectly compatible with computer display UV Protecting: 99% UV rays, 380-420nm blue light(does not filter beneficial light) 1 x Privacy Screen Protector 1 x Blue Light Filter 3 x Clips 1 x Wiping Cloth 1 x Blue Light Test Card