Compatible with Seiko Sumo Series (fits the 3rd Gen too)
Highly polished surface
Numerals/markings are engraved and filled with luminous material
Fitting with crystals
Seiko original Hardlex crystal
Sapphire Double Dome - Seiko 'SUMO'
- Clean the ceramic insert only with plain water. Do not use any chemicals, such as cleaning agents, acetone, thinner, etc.
- Luminous material is light green under daylight and glows green in the dark.