Transparent lens, the lens was made of a fully transparent base, without adding any pigment, while maintaining high light transmittance. less reflective, no affect reading, and almost no color difference, which can be perfectly used as computer glasses Stylish frame, give men and women an elegant fit Replaceable lenses -The original non-prescription lenses can be replaced with progressive/prescription lenses at your neighborhood reading glasses place. Premium Lens Coating – UV Light Blocking (100% Blocking UVA 100% Blocking UVB)Anti-Scratch Anti-Reflective Anti-Glare Anti-Dust Anti-Oil(Fingerprint Resistant) Electromagnetic Ray BlockingBlue Blocker Lens: lens can block harmful blue light, release your eye fatigue when watching TV and looking at computer. And provide you 100%UV400 protection. Reduce Eyestrain and Enjoy Better Sleep: no more eye fatigue, blurred vision and headache during your computer/ ipad/ tablet/ iphone screen time. Better sleep for you, blue light blocker is there for your eyes and guardian for your exquisite life. Transparent Lens(Not Tinted Yellow Lens): give you a clear vision when play computer and laptop. [Packing list]: 1* eyeglasses; 1* soft clean cloth; 1* blue light blocking test tools. [Lifetime Warranty]: you can return the defective products for repairing or exchanging for free at any time without any question. [Kindly Notice]:not including man-made damage.Blue Light Blocking Glasses: Improving Your Digital Life Blue light blocking glasses lens applies the cutting-edge U.S. HEV-Adsorb substrate absorption technology. It can absorb and cut 39% of harmful high-energy blue light.UV light prevention, Anti-blue-ray lens utilizes special U.S. substrate processing technology to protect the eyes from ultraviolet radiation and block UV light