![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
![Titanium Keychain Tritium Vial Housing Tritium Tube EDC Titanium Carabiner 3 * 22.5mm Tritium Keychain Titanium Keychain Tritium Vial Housing Tritium Tube EDC Titanium Carabiner 3 * 22.5mm Tritium Keychain](https://ae01.alicdn.com/kf/A6eb807e5075e47898227f67add284f90j.jpg_640x640Q90.jpg_.webp)
Titanium Keychain Tritium Vial Housing Tritium Tube EDC Titanium Carabiner 3 * 22.5mm Tritium Keychain
![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 at Amazon 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 at Amazon](https://images-na.ssl-images-amazon.com/images/W/MEDIAX_792452-T2/images/I/612jkoiAnML._AC_UL210_SR210,210_.jpg)
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 at Amazon
![Titanium Keychain Tritium Vial Housing Tritium Tube EDC Titanium Carabiner 3 * 22.5mm Tritium Keychain Fob (Not Included Tritium Vial) - Walmart.com Titanium Keychain Tritium Vial Housing Tritium Tube EDC Titanium Carabiner 3 * 22.5mm Tritium Keychain Fob (Not Included Tritium Vial) - Walmart.com](https://i5.walmartimages.com/asr/1bbdc106-1a66-4355-b325-1f8145629c42.f4f0790a8d1438412cee2d0d5e973cfe.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Titanium Keychain Tritium Vial Housing Tritium Tube EDC Titanium Carabiner 3 * 22.5mm Tritium Keychain Fob (Not Included Tritium Vial) - Walmart.com
![Titanium tritium keychain key ring luminous tritium gas lamp lifesaving emergency lights Automatic light 25 years - Price history & Review | AliExpress Seller - SZ Midsummer Night Co.,Ltd | Alitools.io Titanium tritium keychain key ring luminous tritium gas lamp lifesaving emergency lights Automatic light 25 years - Price history & Review | AliExpress Seller - SZ Midsummer Night Co.,Ltd | Alitools.io](https://alitools.io/en/showcase/image?url=https%3A%2F%2Fae01.alicdn.com%2Fkf%2FHTB10BEzSpXXXXXpXpXXq6xXFXXXW%2FTitanium-tritium-keychain-key-ring-luminous-tritium-gas-lamp-lifesaving-emergency-lights-Automatic-light-25-years.jpg_480x480.jpg)