There are still contemporary watches that use radioactive isotopes like tritium for illumination. I’ve always wanted a watch with always-on lume. Here is a goo

There are still contemporary watches that use radioactive isotopes like tritium for illumination. I’ve always wanted a watch with always-on lume. Here is a good example, the Marathon GSAR. You can see the radioactive symbol on the dial. https://www.marathonwatch.com/products/arctic-edition-large-divers-automatic-gsar-with-stainless-steel-bracelet-41mm https://www.marathonwatch.com/products/arctic-edition-large-...