1. ND: 1.56
2. Abbe value: 42
3. Specific Gravity: 1.28
4. Density: 1.14g/cm3
5. Available color: Brown, grey, bule, green, purple, pink, orange
6. Diameter: 65mm, 70mm
7. Power range:
SPH: 0.00~+8.00/CYL: -0~-2.00
SPH: 0.00~-8.00/CYL: -0~-2.00

8. Features:
A. Color changing with in few seconds between outdoor and indoor
B. Color darkening concentration reach 70% for PhotoGrey and PhotoBrown and 55% for pink blue, green, purple and orange
C. High original transmission, high rate of darkening in the sun, High rate of fading out of the sun
D. 00% intercept to UV400nm ray
9. EMI-finished lenses
base: 2.00, 4.00, 6.00, 8.00