Otterbox Defender MagGLASS UHD Screen Guard / iPhone X Meet the UHD MagGLASS High-Performance Screen Guard. An A-spec tempered glass that is designed and engineered like your digital life depends on it. We test and qualify our glass based on these 6 essential performance benchmarks: 1) A+ Impact Rating: This is measured by the abilty for the glass (once installed) to retain structural integrity after a direct impact of 6FT. Any glass chipping or hairlines fractures reduce the impact rating (and if larger than 0.
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