REONAS Sports Glasses, Photochromic, Color-Changing, Blue Light Blocking, Transforms into Sunglasses for PC Work and Outdoors, Lightweight, UV400

[Two-way use for business/outdoors] These lenses feature blue light blocking, essential for working on a computer, and a photochromic function that changes color when exposed to sunlight when outdoors. [Frame design features] The sporty frame and adjustable modern (tip cell) design enhance your individuality. Sports/eSports/Road biking [Photochromic/color-changing function] These lenses are colorless and transparent indoors. When outdoors on sunny days, they will change color to approximately 30% of their original intensity. This is not so dark that it becomes blinding (approximately 60%), but rather a light gray color change, a soft-color sunglasses type of color change that is currently trending and often seen worn by celebrities. (A common misconception among some people is that these glasses will not discolor while driving, but most cars have UV-cutting coating on the windows, so UV-adjustable glasses will not discolor. They will only discolor outdoors in sunlight.) [Blue light blocking rate: 40% JIS standard] 40% blocking lenses are an ideal blocking rate for desk workers and other people who use PCs for long periods of time at work, as well as e-sports players, gamers, and people who use smartphones for long periods of time. [UV400 coating] UV400 protective coating blocks 99% of harmful UVA and UVB rays, protecting your eyes from UV damage. [Weight/material] Weight: 24g [Functions] Blue light blocking, sunlight discoloration, UV400 coating [Frame material]: TR90/silicone