The Helmet Diamond Glass 4D is a tempered glass screen protector designed specifically for the Samsung J2 (2018). It features a 9H hardness rating, which helps keep your front screen safe from scratches and shocks during daily use. Thanks to its 4D design, the glass extends to cover the curved edges of the display for more comprehensive protection. This black-bordered protector is also built to resist dust and reduce fingerprints, ensuring that the touch screen remains fully functional and clear while you navigate your phone.