Swiss Timer Black Outdoor Classic Tritium Chronograph Collection
Swiss Timer Outdoor watches combine technological innovation with comfort and endurance required for any outdoor, sporting or work activity.
Swiss Timer Outdoor watches have the world's highest quality H3 tritium produced in Switzerland by MB Microtec. These tritium watches glow 100 times brighter than watches with another illumination system. Swiss Timer Outdoor watches glow intensity is guaranteed for 10 years. The light-emitting devices (glass vials containing gaseous tritium) require no battery power or any other form of external power supply, do not require the push of a button, never need servicing or maintenance, and have a useful life of up to 25 years.