1. ANTI BLUE LIGHT - Computer blue screen protector uses advanced blue light blocking technology to specifically filter blue light with lengths between 380-420nm. Relieve eye discomfort. Meanwhile, it helps you sleep better.
2. Material: The protective film is made of high translucent pet material with excellent dust and scratch resistance, effectively preventing the screen from being infested with dust and scratches, keeping your computer screen clear and bright at all times.
3. Compatible:This protective film is compatible for 18.5 inch 16:9 (410*231mm) desktop computer screen, suitable for students, OL, and programmers, also suitable for office, home use.
4. Easy to install: installing this protective film is very easy, just remove the film on both sides of the protective film after cleaning the screen and then apply it. No bubbles will be created during the film application process, so your screen will always be in ideal condition.
5. ANTI UV: The protector also filters out 99% of UV rays, providing you with the safety of all rounds. Whether you use your computer outdoors or indoors, you can enjoy a comfortable digital time. For a wide range of HEV protection applications.

Speculation:
Item Type: Blue Light Blocking Screen Filter Film
Material: Pet
Size: 18.5in 16:9 (approx. 410 x 231mm / 16.14 x 9.09in)
Applicable screen size: 18.5in

How to use:
Ready to use on arrival

Packing list:
1 x Screen Protector
1 x dust cloth.
2 x Sticker
12 x Double Sided Tape