... .25~-2.00 ADD: +1.00~+3.00Index 1.56 photochromic semi-finishedAvailable color: grey, broen, green, blue, orange, ... , pinkDiameter: 70mmBase: 50B, 200B, 400B, 600B, 800BIndex 1.56 photochromic round-top/flat-top semi-finishedAvailable color: grey, brownDiameter: D28 ... /70mmBase: 500BADD: +1.00~+3.00Index 1.56 photochromic round-top bifocalIndex: 1.56Diameter: D28/70mmBase: 600B,400BPower range ...