![Amazon.com: TEC Accessories ISOTOPE S323 - Stainless Steel Tritium Vial Housing 3mm x 23mm - Camping Accessories - EDC - Survival Gear : Everything Else Amazon.com: TEC Accessories ISOTOPE S323 - Stainless Steel Tritium Vial Housing 3mm x 23mm - Camping Accessories - EDC - Survival Gear : Everything Else](https://m.media-amazon.com/images/I/81tIPYr8p-L._AC_UY1000_.jpg)
Amazon.com: TEC Accessories ISOTOPE S323 - Stainless Steel Tritium Vial Housing 3mm x 23mm - Camping Accessories - EDC - Survival Gear : Everything Else
![I got a keychain that uses the radioactive decay of Tritium (the radioactive isotope of hydrogen) to emit light. : r/mildlyinteresting I got a keychain that uses the radioactive decay of Tritium (the radioactive isotope of hydrogen) to emit light. : r/mildlyinteresting](https://i.redd.it/w8aszm9jxzi41.jpg)
I got a keychain that uses the radioactive decay of Tritium (the radioactive isotope of hydrogen) to emit light. : r/mildlyinteresting
![Amazon.com: TEC Accessories Isotope PRE (Picatinny Rail Edition) Glow in The Dark Keychain, Titanium Housing for 2 Glass Tritium Vial (Not Included) - Tritium Keychain Fob, Edc Key Accessories, Cool Keychain : Automotive Amazon.com: TEC Accessories Isotope PRE (Picatinny Rail Edition) Glow in The Dark Keychain, Titanium Housing for 2 Glass Tritium Vial (Not Included) - Tritium Keychain Fob, Edc Key Accessories, Cool Keychain : Automotive](https://m.media-amazon.com/images/I/612jkoiAnML._AC_UY1000_.jpg)