Apple iWatch Screen Protector # BETOP&reg; High Quality 0.2mm 9H Tempered Glass Screen Protector Shield HD Film for Apple iWatch Smart Watch (For 42MM) Specifically designed for Apple iWatch Smart Watch. Two Size. High Hardness: Glass material after high tempered steel processing, surface hardness up to 8-9 h, impact resistance is strong, not easy scratches Ultra-high light transmittance:(transmittance of 98% or more) optical transmittance grade, ultra-low refection, high transparency High sensitivity: The glass is coated on the back with a strong silicon adhesive that makes installation easy and attaches the film firmly so as to not affect the touch screen's sensitivity Automatic bonding: High quality antistatic adsorption film, make the product bonding and separation simple, easy to operate, it will automatically bond the screen