This blue blocking screen or blocks blue up to 70%, effectively ing your eyes and easy to install and .

Feature:
Blue Filter
It blocks blue up to 70% to effectively your eyesight.

Why do You Need it?
If you suffer from dry eyes, eye fatigue, reducing melatonin, ultraviolet radiation, freckles, wrinkle or myopia, you need a blue blocking film to you.

The Necessity of it
We have to use computer for a long time while cornea and crystalline lens of our eyes are unable to resist or reflect blue . What's more, blue may cse maculoy which to some extent speeds up the process of losing sight.

Easy to Install
There are 2 ways to install, choosing the one you prefer --- either it up or paste it onto the screen.

Screen or
The surf is matte-finish to effectively resist grease, fingerprint and sweat.

Specification:
Material: PET
Item size: 531.5* 299.5* 0.39mm/ 20.93* 11.79* 0.02in
Package size: 540* 340* 3mm/ 21.26* 13.39* 0.12in
Package weight: 266g/ 9.38oz

Packing list:
1 * Blue Blocking Screen or
1 * Installation packet (-sided tapes, Slide adhesive tabs, ing cloth)