The ZAGG InvisibleShield Glass XTR4 Screen Protector is the strongest, most technologically advanced screen protection from ZAGG. Designed with Hexiom2 technology and reinforced with Graphene, XTR4 is stronger than ever.Up to 11X Stronger XTR4'screen protection, fortified with graphene, has been tested up to 11X stronger than traditional glass screen protection. Helps support Eye Comfort and Sleep XTR4 is the world's first screen protection with Eyesafe® Radiance Protection Factor 60 technology that filters blue light, which can disrupt sleep. Enhances Color Vibrancy Anti-reflective technology increases transmitted light, improving screen clarity and enriching colors for deeper blacks, true blues, and more vibrant reds. Maximum Touch Sensitivity XTR4's SiO2-enhanced coating ensures maximum touch sensitivity and provides a smooth surface for frictionless swiping.