LIFE TIME WARRANTY -100% risk free to try, unsatisfied glasses can be refunded within 90 days of receiving.Firmoo computer glasses lens' blocking rate are designed at about 40% considering two reasons:Higher rate would cause color distortion, lower rate would not protect your eye effectively. LENS TECHNICAL CHARACTERISTICS - 1.Multifunctional coatings,like UV400 protection, anti scratch coatings.4.Skin friendly without causing allergic reactions. 3.High wear-resistance, hard to break and 90 days return policy is another quality warranty. 2.Replaceable lens to meet your reading glasses or sunglasses needs. FRAME TECHNICAL CHARACTERISTICS - 1.Acetate frame is known for its strong stability and not easy to deform.DIFFERENCE HAPPENS IN DAYS - Firmoo computer blue light filter glasses with anti UV, anti glare coatings on lens would work effectively for blocking blue rays from phone,TV, laptop, computer and other digital screens.Reasonable blocking rate about 40%.Besides protecting your eyes, Firmoo oversized computer glasses are perfect accessories to show yourself on social media.Special designed oversized Cat eye look would shine your style out from other people. DESIGNE CONCEPT - When you spend over 8 hours every day on social media, Firmoo anti blue rays glasses help to reduce eye strain and headache by blocking blue light for you.Firmoo Blue Light Blocking Computer Reading Glasses Vintage Cate
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