The photochromic lens changes according to the intensity of ultraviolet rays. The stronger the ultraviolet rays, the deeper the discoloration, and the weaker the ultraviolet rays, the lighter the discoloration. Photochromic lenses are transformed from indoor reading glasses to outdoor reading glasses
Model Number: ZP-RG052-PH
Size:（55-18-135）147*135*38mm/21.1g
Frame Material: Metal
Lens Material: PC
Color: Black with silver frame/Black with gold frame
Magnification Strength: 1.0x,1.5x,2.0x,2.5x,3.0x,3.5x & 4.0x