❶ LENS: ANTI BLUE LIGHT - Harmful blue light refers to the 415-455 nanometer range of the visible light spectrum. DOOViC blue light filter reading glasses lenses can block about 99% harmful blue light,but do not block all blue ray. So doovic black reading glasses 1.0 excellent for smartphone/tablet/monitors and LED lighting emit short-wave blue light. ❷OUTLOOK: Neck Specs Reading Glasses - Stylish neck specs long arm around the neck with luxurious frame comes in shiny black acetate finish throughout and features square large lenses. Our eyewear are available in 3 colors,you love having ones to match with whatever you choose to wear, and you love how the designs pop when worn, add some glamour and sophistication, make you look younger and fashionable ❸ MATERIAL:TR90 and TPE - This eyeglasses frame made with TR90 material that is incredibly durable flexible and lightweight. The thermoplastic elastomer are subsequently pulled over the temple ends and prevent frames from slipping. And flexi arms require less adjustments and they can bend under pressure and contour your face comfortably. So this mens spectacles long distance are extremely comfortable to wear and are more able to withstand everyday use ❹ BENEFIT：Wear Blue Light Readers - Less eye strain,better sleep,fewer headaches,reduced risk of eye diseases and you can avoid many of these issues related to blue light by stepping away from your computer when working, gaming and reading on office/home. This presbyopia glasses was made of a fully premium resin transparent materials, not only for paperwork such as read books/newspaper/menus/packets, also view computer/pad/phone/laptop/TV/digital screen, etc. ❺SERVICE:ACCESSORIES and AFTER-SALES - This womens black glasses came with a soft case, cleaning cloth, neck lanyard and a keyring with a tiny glasses screwdriver tool attached with reversible shaft for both cross-head and flat screws. And if any question, please to contact me or contact amazon customer service,we will reply you within 24 hoursColor: Tr90 Black Manufacturer: DOOViC Part Number: TR1216C1-GB-225 Size: LWho Needs Reading Glasses?1.Adults older than 40 who find they have to hold magazines, books, and other reading material at arm’s length in order to focus often need glasses solely for reading2.In addition to difficulty in reading, other symptoms of presbyopia — such as eye strain, headaches, and blurred vision while reading — may occur if you continue trying to focus without some type of vision correction.Why You Should Try Blue Light Glasses If you already wear eyeglasses for distance vision, you may need blue light filter lenses1.Anti Eye FatigueLong time exposure to blue ray would lead to digital eye fatigue. Wearing your doovic glasses,no more tired eyes.Reduce eye strain and sensitivity to light when facing digital screens.Great for office workers or anyone who has to look at screen all day.2.Minimize headacheDo you suffer headaches from long time screen time?DOOViC blue light readers will supercharge your health by blocking detrimental blue light while letting in all other beneficial light3.Sleep betterExposure to high rate blue light will impact our sense of circadian rhythms and wreck our internal rock, then lost sleep.Wearing doovic blue light filter reading glasses will improve your sleep, help you sleep better Eyewear-care don'ts1.Don't wipe lenses when they’re dry. Any debris on their surface or dust in the cleaning cloth could cause scratches.2.Don't wipe lenses with a tissue, paper towel or paper napkin. They can have a rough surface.3.Don't use bleach, vinegar or window cleaner, which can harm lenses and their coatings.4.Don't put unprotected glasses in a purse, pocket, or bag.5.Don't regularly place glasses on a sink or vanity top. Spatter, sprays, and cosmetics can soil lenses and hair spray or perfume can damage anti-reflective coating.6.Don’t leave glasses in a hot dashboard