Visible Light Photochromic Sunglasses That Change Color Even In the Stylish Square Metal UV Blue Light Cut Light Photochromic [k-eines] Car, Under-rim

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: 5418-140, total width approx. 140mm (spreads comfortably up to 150mm at temples), lens width approx. 54mm, lens height approx. 26mm, temple length approx. 140mm, weight approx. 18g The square under-rim design can be worn by both men and women. It has a casual metal design. [k-eines] Visible light photochromic sunglasses that change color even in the car, stylish square metal under-rim UV and blue light cut KE-1000