Archgon Fashion Computer Glasses Anti Blue Light UV Protection A+ Crystal Tempered Lens Model Tokyo Nerdy GL-B147-K FDA registered. Non-prescription lens. Help reduces symptoms of dry eyes, strain, and headache from long hours of viewing Special coated lens blocks harmful blue-light emitted from the screen of your computer, cellular phone, TV, and other electronic devices;help reduces symptoms of dry eyes, strain, and headache from long hours of viewing Coated lens reduces flare and has minimum effect on color accuracy, designed for professional as well as for serious hobbyist 57.89% Blue light blocking percentage. 99% UV Protection. Tested by SGS, a Swiss-based lab. Note: 100% of blocking percenatge will cause "color variation" Dimension: Lens width 56mm, lens height 44.6mm, bridge (nose) width 17mm, temple (arm) length 136mm. Comes with carrying pouch and cleaning cloth