This anti-blue tempered glass protector will not only save your OLED screen from damage caused by bumps scratches and dust but also help prevent eye fatigue and tiredness associated with blue light Although lightweight and very slim it can offer 9H protection which is the equivalent of taking a knife to your screen Despite this very high standard of protection it is easy to install without compromising the quality of the screenProtect your screen from scratches and bumpsEasy to applyResidue free removalTotally transparentOther sizes also availableExtremely tough near diamond hardness will stand up to serious pressure9H on Mohs hardness scaleBlue screen blocks 98 of blue radiation to prevent eye fatigue sleep disorders and tiredness caused by exposure to blue light