Readers+ Photochromic Lens Change to Gray or Tawny on Suuny- used like sunglasses.
Photochromic lenses are also referred to as light-sensitive lenses"
Model Number: ZP-RG101-PH
Size:（54-18-146）140*146*44mm/22.0g
Frame Material: Metal
Lens Material: PC
Color: Black
Magnification Strength: 1.0x,1.5x,2.0x,2.5x,3.0x,3.5x & 4.0x