1) ND: 1.56
2) anti-water,anti-oil dirt,anti-scratch,hi impact-resistance.
3).35% thinner than CR-39 lens slim and thin
4) ABBE value: 38
5) HMC and HMC+EMI coating available in greenish and bluish colors; various  
    fashionable colors available  
6) Diameter: 65mm for plus power and 70mm for minus power
7) Range of power:
    a) Sph: plano ~ -10.00  
    b) Sph: plano ~ -8.00/C: -0.25 ~ -2.00 
    c) S: +0.25 ~ +6.00/C: 0-0.25 ~ -2.00
    d) RX powers: plano ~ -6.00/-2.25 ~ -4.0, G: +0.25 ~ +4.00/-2.25 ~ -4.0
8) HC, HMC, EMI, UVA
9) Spherical and aspherical design
10) Tinted coating (purple, blue, green, orange, grey and brown)