On the lookout for your very first dive watch? This can be an intimidating ... said material would have been highly radioactive radium, and later, tritium.) Finally, some kind of time-recording ...

GP100 Winner Dive watches, by definition, require luminescence. Mechanical watches use either photoluminescent paint that must absorb light to emit a glow, or tritium gas, which permanently glows ...

As a diddy dive watch, it's pretty much the most trendy ... One of the other cool features of the Marathon SAR range is that it uses Tritium gas tubes for lume. That does mean that the watch ...