1.56 Photochromic Lens Change very soon Detailed Product DescriptionSpecification :1). Finished lens power range: 70mm SPH (-0.00~-6.00) CYL(-0.00~-2.00) 65mm SPH(+0.00~+6.00)CYL(-0.00~-2.00) 2)Semi-finished lens BASE: 2.00,4.00,6.00,8.00 3)Colour : Photochromic brown and Photochromic gray 4) Change very soon 5) Coating : HMC, EMI ,Hydrophobic