CAMMENGA was founded in 1992 as the official supplier of the Tritium Lensatic Compass to the U.S. Military.
The contract with the Department of Defense makes CAMMENGA the World's largest manufacturer of military compasses.
may be used for longer periods of time, but the night time luminous feature will fade rapidly after 10-12 years
Cammenga Tritium Wrist Compass w/Black Wrist Band - J582T
From the Manufacturer
Tritium has a "Half-life" of almost twelve and a half years. Experience proves that the strength of tritium, between 10 and 12 years old, begins to decline rapidly. We generally tell people to expect "A good ten years" out of our tritium micro lights.
Cammenga Tritium Wrist Compass - B0016SRA58