1.SPECIFIC GRAVITY: 1.19 2. ABBE VALUE:37 3. TRANSMISSION: 99.0% 4. DIAMETER:60MM,65MM ,70mm,72mm,75mm ... quality guarantee. 2) Muli-coating ( AR) machines are from Korea. 3) Imported material, Longer time won't be yellow. 4) Meet ... also available. 2) Progressive, flat top/round top/invisible bifocal lens,tinted lens 1.56 OPTICAL LENS