Ceramic Insert - 031 Mil Sub Black
Fits Seiko SKX031 & SKX033
Numerals/markings are engraved
Sapphire Double Dome Crystal required
Due to the sloping design, this ceramic insert will sit slightly higher than the original Seiko hardlex crystal.
Highly recommended to use it with this Sapphire Double Dome specially manufactured by DLW for this model. Click link to see how the ceramic and sapphire double dome fits.