... machine in Suzhou (Freeform Seiko BP-01) Gerber Freeform Machine RX Lens Range:Single Vision:1.499,1.56,1.61 ... .56Progressive Lens for Adult:1.499,1.56,1.61 Rx Lens RangeIndexProduct DescriptionPower Range Photochromic Lens1.560Single Vision+12.00D ... -4.00D,1.00—3.00 1.67 high power RX lens