1. Material: Korea NV55
2. Refraction Index Nd: 1.561
3. Diameter: 65/70mm
4. Abbe Value: 38
5. Coating Colour: Green
6. base Colour: Transparent
7. UV Number: 380/400 (if the lens is photochromic, it will have 8)
8. Available Color: Grey
1.56 Flat Top Lens