Reduce Eyestrain,Anti Blue Rays,Spring Hinge Bamboo Pattern Computer Reading Glasses(Black,Amber Tinted Lenses) without Strength FEATURES Frame Material: Plastic Lens width: 1 13/16"(46mm) Frame width: 5 5/16"(135mm) Lens height: 1 3/8"(35mm) Frame height: 1 9/16"(39mm) Bridge (DBL): 9/16"(15mm) Temple length: 5 5/16"(135mm) Spring hinge: Yes Lenses: Aspheric Head size: Narrow To Medium Rx-able frame:Yes CARE To avoid damage, never clean your eyeglasses with paper towels or clothing or alcohol, and also avoid using household detergents or soaps. While a few mild soaps don't harm lenses, today's extra strength soaps are powerful enough to slowly disintegrate lens coatings. PROTECT YOUR EYES - Anti glare lens coating prevents insomnia and macular degeneration. Low blue light glasses provide computer eye strain relief & alleviate dry eyes when using your T.V., smartphone, tablet or PC gamer equipment.BLOCKING OVER 80% BLUE LIGHT - Improved Blue light blocking lenses naturally blocks out the recommended 80% of blue light: do not settle. In order to black more blue light and meet the online test, the lenses must with apparent tinted or very dark lens, please kindly understand.HIGH TECHNOLOGY - Anti-UV,Anti-scratch,Anti-screen flicker, Anti-glare, Anti-fog coated; Multi layer coating designed specifically to reduce glare, reflect blue light away.FDA REGISTERED - Fully registered with the Food and Drug administration to import Class I medical devices.100% RISK FREE PURCHASE - In case any broken problem happens, contact us without hesitation to solve the problem until satisfaction. We provide 2 YEARS WARRANTY and lifetime after sale service. Customers can return and get refunded for any reason. You have no risk to try. View more great items On Jun-12-18 at 20:42:21 PDT, seller added the following information: