TruGlo Denali Tritium Watch

This is the watch that really keeps going and going and going…

How long does the tritium illuminate the phosphor, and how long is it radioactive?

CHICAGO could have used this.

Well, I have Tritium on my weapons nitesights…Had the weapon for 10 years and they are still as bright as when I got them put on.

Generally 10 years is the lifespan of the 3H tubes.

I looked it up. Tritium half life is 12 years, so these will be about half as bright 12 years after the tritium was created, 1/4 as bright 24 years later, 1/8 as bright in 36 years, etc.