iPhone 4/4S Screen Protector, YooyoTM iPhone Premium High Definition Shockproof Clear Tempered Glass Screen Protector 0.33mm Thickness 2.5D Curved Edge for iPhone 4/4S Industry-high hardness: 9H hardness can effectively protect your screen from scratches and external shocks (hard than a knife) High-response & high-transparency: Only 0.33mm thick; maintains the original touch experience. High transparency: 94% light penetration ratio preserves the original viewing quality Anti-Shatter Film: If broken, the tempered glass will breaks into small pieces that are not sharp, making it more safer for users Oleophobic Coating: Reduces smudges and fingerprints, ensures easy cleaning Ultra clear Shock-resistant layer under the glass. High touch sensitivity