The Helmet Diamond Glass 5D is a protective screen protector specifically designed for the Oppo A17. It uses tempered glass with a 9H hardness rating, which helps shield your display from scratches and shocks during daily use. The 5D construction ensures full coverage that extends over the curved edges of the screen, while the black frame blends seamlessly with the phone's original design. Because it is engineered for high touch sensitivity, you can interact with your device as if there were no layer added to the glass. Applying the protector is straightforward thanks to a bubble-free installation process, making it a practical choice for anyone wanting to keep their screen pristine without sacrificing responsiveness.