Self-Illumination system glows for over 25 years and are the easiest to read in low light, even total darkness. The light emitting devices require no battery power or any other form of charging, and never need servicing. Equipped with a tritium light source. These tiny, airtight vials, sealed under high pressure, are resistant to water, oil and the most corrosive materials. A minute quantity of tritium lights up the dye. The watches also have; hardened mineral crystal, high quality swiss component movement, water resistant to 200 meters, 3 year battery and 1 year warranty.
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