Visible Light Photochromic Sunglasses That Change Color Even In the Stylish UV and Blue Light 42003 Light Photochromic Champagne [k-eines] Car, Oval,

Regular photochromic lenses change color when exposed to ultraviolet light. Car windshields are designed to block ultraviolet light, so they cannot be used as sunglasses inside a car. On the other hand, these visible light photochromic lenses use a photochromic agent that reacts to light (visible light), so they change color even inside a car, allowing you to use them as sunglasses. Visible light photochromic lenses change the color of the lenses depending on the amount of light. They change to a light color (approximately 10% density) indoors or at night, a medium color (approximately 50% density) in the car, and a dark color (maximum of approximately 90% density) outdoors or on sunny days. They also have a blue light blocking function that blocks approximately 35% of blue light on average. Frame size: 5117-138, total width 138mm (spreads comfortably up to 150mm at temples), lens width 51mm, lens height 26mm, temple length 138mm, weight 18g A smart, slim oval type under-rim. A casual unisex design. [k-eines] Color-changing visible light photochromic sunglasses that change color even in the car, stylish oval, under-rim, unisex, lightweight, UV and blue light cut, 42003