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Photochromic Polarized Lens
KATELUO Photochromic Lens with Germany Intelligent Photosensitivity Factor.
Transparent and Clear Lens, Photochromic Uniform.
Change with the UV Intensity under the sun.
Driving in Tunnel Normally, no need to take off.
The photochromic lens react to UV light and not to visible light, there are circumstances under which the darkening will not occur. Frist example, is in your car. Because the windshield blocks out most UV light, photochromic lenses will not darken. Second,is indoors test with ordinary lighting(Because the lighting used in daily lighting does not contain ultraviolet light),photochromic lenses will not darken.
Exposed to UV rays, as in direct sunlight OR Use ultraviolet light lamp (not ordinary lighting lamp).This is the way to activate the photochromic function of the product.
Intelligent Photochromic with Shortest Time
Intelligent Photochromic Sunglasses
Photochromic with Shortest Time
Best Choice for Driving