The Helmet Diamond Glass 5D is a protective screen protector designed specifically for the Oppo A57s. It uses tempered glass to provide a durable shield against daily wear, effectively resisting scratches, shocks, and dust accumulation on your display. This protector features a 5D full-coverage design that extends over the curved edges of the screen for seamless integration. Its ultra-sensitive surface ensures that your touch interactions remain precise, while the bubble-free installation process allows you to apply the black-bordered glass smoothly without trapped air.