Description
The intelligent color-changing feature provides good light-transmittance and clear vision.
Photochromic principle: under ultraviolet light or the sun, the radiation will cause a chemical reaction that changes the lenses uniformly.
(Photochromic lenses cannot change color under normal light, and must be exposed to sunlight to change color)
(Photochromic lenses cannot change color under normal light, and must be exposed to sunlight to change color)
