Specifications

1) can change very fast, change color in few seconds
2) this photochromic without base colour.
3)100% blockage of harmful UV

1) 1.56 index
2) uncoated, hard coated, multi-coated
3) photo brown and grey
4) single vision, bifocal, progressive

5) this is the photochromical lens

6)  the diameter is 72/65mm

7) can be finish and semi finish

8) can change very fast,  change color in few seconds

9) this photochromic without base colour.

10)100% blockage of harmful UV rays.