Product: Clock: Power Source
Plutonium Watch   (+4)  [vote for, against]
Nuclear power!

No-one has ever looked at a digital watch and exclaimed "I wish the battery lasted much longer than just a few years."

Even if battery life is a concern, a simple solar panel is enough to give digital watches a practically infinite lifetime.

But you have to admit that nothing would be quite so suave as a digital watch powered by plutonium.

The tiniest sliver of Pu-238 would be sandwiched between peltier cells to produce a miniature Radioisotope Thermoelectric Generator (RTG) -- the same technology that powers space probes. Picture the envy on your colleagues' faces when they realize your wristwatch is _nuclear powered_.
-- mitxela, Jun 18 2020

Another use of Pu-238
If you're concerned about safety, remember that Pu-238 was used as a long-lived battery for pacemakers. So it must be safe! [mitxela, Jun 18 2020]

Would it be TSA-compliant?
-- 21 Quest, Jun 18 2020

Could I go ahead and call it an atomic clock?
-- lurch, Jun 18 2020

Digital numerals in a little cloud chamber display?
-- wjt, Jun 18 2020

random, halfbakery