There is no other keychain out there more unique than the Tritium keychain. But what makes it so unique? It's radioactive. It is the same material used to make hydrogen bombs. Tritium is not like a regular glow stick that loses its brightness over time. What makes Tritium so special is that it will glow constantly, day and night, with a life span of 20 years. Even if you have never heard of tritium before, chances are you've been close by it. Tritium is used in watches, gun sights, compass, and many other items. Now in a keychain form, this Tritium keychain is the perfect companion for your set of keys. Your keys will now be easier to find in the dark with Tritium light. Even though this Tritium keychain is radioactive, it is still safe to use. Keep in mind that the particles emitted are so weak they don't even make it pass your skin. Buy your very own Tritium Glowring Keychain today!