<b>What is Blu-light?</b><br>Blue light refers to light with a wavelength of 400-500 nm. Blue light is a kind of visible light. Blue light is short and has high energy. It can directly penetrate the lens directly to the retina of the fundus. In the era of smartphones, people spend more time staring at mobile phone screens. However, mobile phone screens, LEDs, and computer screen lights all generate a lot of blue light. This can cause harm to people's eyes and hands, and it can stimulate brown pigments and make skin. Produce yellow spots and freckles will deepen the degree of myopia, resulting in visual fatigue, but also not conducive to normal sleep<br><br><b>Why You need to anti blue light screen protector? </b><br>1.Filter out Blue Light<br>2.Relieve the fatigue of eyes<br>3.Radiation Protection:Through the absorption and conversion of ultraviolet rays, it prevents the dry skin caused by UV reflections from causing skin pigmentation, chloasma and other problems<br>4.Anti-fingerprint,Scratch Resistant,HD Retina Clarity<br><br><b>Not Just A Blue Light Screen Filter</b><br>1.Anti-static Screen protector<br>2.Anti-scratch Screen protector<br>3.100% UV400 Blocking Screen protector<br>4.Radiation Protection Screen protector<br>5.Relieve the fatigue of eyes Screen protector