Features:
1) Darkens in the sun or ultraviolet light quickly,
2) Quickly become clear after leaving sunlight,
3) Good color hue purity and UV absorption,
4) Useful for correcting lenses and sunglass lenses
Features:
1) Darkens in the sun or ultraviolet light quickly,
2) Quickly become clear after leaving sunlight,
3) Good color hue purity and UV absorption,
4) Useful for correcting lenses and sunglass lenses