The Helmet Diamond Glass 4D is a tempered glass screen protector specifically designed for the OPPO A54S to shield the display from daily wear. Its 4D technology features curved edges that provide full coverage of the screen, ensuring that the vulnerable corners are protected against impacts, scratches, and shocks. To keep your view clear, it uses HD transparency and an oleophobic coating that repels fingerprints, dust, and dirt, making the surface easier to wipe clean. You will notice that the touch sensitivity remains identical to the original screen, while the black finish and precise fit allow it to work seamlessly with most protective cases you might already own.