traser H3 Watches
A traser® H3 watch is a Swiss made quality product with an unsurpassed readability in darkness. The trigalight® illumination of a traser® H3 watch is independent of a battery and does not need sunlight for charging. A traser® H3 watch is robust, reliable, and standardized according to military specifications. trigalight® are small, airtight sealed glass tubes, coated on the inside with a luminous substance and filled with tritium gas. Electrons emitted from the gas excite the material to give off a permanent, cold light. trigalight® have a guaranteed lifespan of at least 10 years.
Here's a link to traser's technology info:
Warranty/Service Center – The Empire Group: http://theempiregroup.ca