Premium 9H Tempered Glass LCD Screen Protector Guard for Garmin Astro 430 320 220 GPS GuarmorShield Tempered Glass screen protector for Garmin Astro 430 320 220 GPS Real Tempered Glass: Made with transparent glass that has undergone specialized treatment to industry leading hardness of 9H, Provides super high definition clarity with Maximum protection (9H) from scratches to high impact drops. 2.5D Rounded Edge: 2.5D rounded edge designed to provide smooth and naked screen experience. Silicone bubble-free adhesive: Adheres to the screen without any gaps or bubbles, leaving the touch sensitivity unaffected. Oleophobic Coating: The protector has an oleophobic coating that will reduce fingerprints and other contaminants and makes the screen easy to clean.