Through specialist tempering development and treatment we achieve the industries highest level of hardness with 9H protection It prevents scratches and damage under the toughest of situations Created using high quality eco-friendly materials that allow stunning crystal clear visuals, amazing anti-glare properties and complete protection And at the same time with these function below: Waterproof Zero bubbles Oil repelling Product Details: Anti-scratch Super strong Ultra clear Anti-crack Smooth responsive touch Prevents damage to your precious, expensive screen