XGear IP4-KRY Krystal Sapphire Screen Protector for Apple iPhone 4/4S - Retail Packaging - Clear Surface hardness of 9H (with the hardest being 10H) provides superior scratch resistance, Sapphire is 3.3X (Vickers) harder than glass Thickness of .65mm (0.025in.) keeps your phone slim and sleek, Beveled edge helps prevent cracked & chipped edges Oleophobic coating resists liquids, oils, and fingerprints Sapphire has a 30%+ higher dielectric constant enabling: Higher sensitivity, Hover touch applications, & Through-glove touch Higher Thermal Coefficient for better thermal management Surface hardness of 9H (with the hardest being 10H) provides superior scratch resistance, Sapphire is 3.3X (Vickers) harder than glass^Thickness of .65mm (0.025in.) keeps your phone slim and sleek, Beveled edge helps prevent cracked & chipped edges^Oleophobic coating resists liquids, oils, and fingerprints^Sapphire has a 30%+ higher dielectric constant enabling: Higher sensitivity, Hover touch applications, & Through-glove touch^Higher Thermal Coefficient for better thermal management