Scratch Proof,Easy to Install,Ultra-thin. Real 4D Cover Curved Round edge design provides total protection. 9H surface hardness 3x stronger than regular plastic PET film. HD Vision, Anti-fingerprints, Anti-Scratch, Explosion-proof. Full Cover Tempered Glass for Apple Watch 42mm with black border One-push super easily installation, Long-lasting protection from scratch. High sensitivity, not affect the touch screen’s sensitivity. Designed for Apple Watch High Hardness, impact resistance is strong,not easy scratches Ultra-high light transmittance, ultra-low reflection, high Transparency. Anti-Fingerprint: Hydophobic and Oleophobic coating proctect against sweat and reduce fingerprints. Optically Transparent: Optically transparent, virtually invisible and HD clear tempered glass screen protector. Waterproof: Water resistant, impact and shock proof case with port covers to block dust and debris.