Sapphire is the hardest natural mineral on earth except diamonds, its Mohs hardness reaches 9. It has the characteristics of anti-corrosion, high hardness, wear-resistant and scratch-resistant, anti-glare, anti-bump and so on. PERFECTSIGHT sapphire grade blue light blocking healthy screen protector is specially crafted tempered glass with a composite superhard sapphire material layer coated on, so that it has the effect of high hardness, scratch resistance and wear resistance. Its surface hardness can reach Mohs 7 or above, close to the hardness of sapphire, and has good light transmittance and impact resistance. What’s the advantage of PERFECTSIGHT sapphire grade screen protector? * Scratch-resistant * High definition * Shatter-resistant * Oleophpbic coating * Sensitive touch * Seamless fit Blue Light and purple light filter, blocks about 30% of the blue light of 400-500nm short wave High transparency ensures excellent visual effecte:99% light transmittance ensures maximum resolution for super amoled displays, you can barely feel the existence of glass protector when reading or watching. See more?Powerful Garrantee & Wide Target Audience?30 days no-hassle refund, a replacement if air bubbles, cracks, defects etc within 90 days. PERFECTSIGHT Sapphire eye care screen protector perfect for short-sighted person, school student, office worker, social media addict, online gamer, fashion lover etc. ?Case Friendly, Full Coverage not Edge to Edge, Easy Installation? 2.5D Curved Edged Design for iPhone prevents chipping, providing enhanced safety and greater compatibility with a variety of cases, work perfectly. ?Amazing Fingerprint and Smudge Resistance, Feels Smooth Sensitive to Touch ?A healthy tempered film to help you guard 24 hours,Only 0.3mm thick, this screen protector maintains high touch sensitivity. Silky smooth feel, giving you an extraordinary cell phone experience when you watch videos, read news, play games. ?Eye Protection - Blue Light and Purple Light Filter - Anti Eye Fatigue and Good Sleeping ?PERFECTSIGHT Sapphire tempered glass screen protector compatible with Apple iPhone 14 Pro Max 2022 release uses "Japanese anti-blue light material" to minimize Digital Eye Strain caused by harmful blue and purple light emitted from digital screens. It helps promote healthy melatonin levels for improved sleep. ? Sapphire Grade Incrediable Defense - Original Screen Glass for iPhone 14 Pro Max?Remarkable explorsing-proof glass, high strength & impact resistance, upgrade to Mohs hardness greater than grade 7, 400? tempered, tough protective layer, high strength & impact resistance, more durable. Ion exchange process, easily resist daily scratches from sharp objects without leaving traces,One sapphire tempered glass is worth more than 10 ordinary tempered glass films.