Hardglass Max Lite tempered glass screen protector with extreme durability for Oppo A57 / A57s by 3mk. Excellent protection against scratches for your display. Perfect fit. Oil repellent surface prevents fingerprints. - Features and product characteristics: Hardglass Max Lite 9H screen protector by 3mk for Oppo A57, Oppo A57s. After hardening at 400 degrees, it reaches a hardness level of 9H, which ensures the best possible scratch resistance. Covers the entire front of your smartphone, for complete protection. Shatterproof film, if it breaks, it won't shatter into small sharp pieces.