About this item Please measure your monitor dimension before purchasing,Specifically designed for 14"(309mm/12.2 inch*175mm/ 6.9 inch.) (display 16:9) laptop or notebook Anti Blue Light: Anti-blue screen protector can greatly reduce the blue light on the eye irritation,Relieve the fatigue of eyes， control myopia deepening, but also through the absorption and conversion of ultraviolet light to prevent ultraviolet radiation caused by dry skin caused by skin reflection, melasma and other issues Scratch Resistant (9H Hardness ) :This Anti Blue Light Screen Protector screencan effectively protect your laptop from unwanted scuffs and scratches by knife, keys and some other hard substances Easy installation: Made from the 9H Hardness Tempered-Glass with 100% Bubble-Free Adhesives for easy installation and no residue when removed Free of Charge Replacement :1 .Damaged screen protectorsments 2. Installation problem such as bubbles or other user error 3.Does not fit your device