Mineral Glass for Rolex 31 MM
Mineral crystal for Mid-Size Rolex 31 MM, comes with gasket.
This is a top quality mineral crystal and is made to exact specifications and size as the original. The magnification for the crystal cyclops is 2 1/2x (just like original) and the crystal has no lens effect.
The mineral crystal is scratch resistant with a waterproof nylon gasket to make your watch waterproof.