Dunfire Tempered Glass HD Clear Screen Protector for 42mm Apple Watchscreen COMPATIBLE MODEL: Apple Watch 42mm HARDNESS: 9H hardness, just below diamond with a hardness of 10H, which protects your phone screen from scratches to high impact drops. THINNESS: Only 0.26mm thick, maintains the original touch experience and high touch sensitivity. IMPROVEMENT: Oleophobic coating, high definition, anti-shatter, bubble-free, anti-fingerprint, no residue and very easy to install and remove. REVOLUTION: 2.5D round edges, extremely level up the hand feeling experience.