An atomic watch?

What's the chances of seeing an atomic watch?

Thoughts.......?

It looks like it already exists : http://www.symmetricom.com/products/frequency-references/chip-scale-atomic-clock-csac/SA.45s-CSAC/ though I havent found much details about its construction.

Now theoretically, even micron scale atomic clocks are possible (see http://arxiv.org/abs/0707.4624 for instance).

oh!

Very interesting! No price tag yet.

I read sometime back that there's a clock in UK that's been running from 15th century (not sure but its been 100's of years that it running) and its now kept in a museum and still working and I'm sure they didn't listed that it used any atomic energy source.

NI$HANT: I read sometime back that there's a clock in UK that's been running from 15th century (not sure but its been 100's of years that it running) and its now kept in a museum and still working and I'm sure they didn't listed that it used any atomic energy source.

Just to make sure there is no misunderstanding:

1) An atomic clock doesn't use "atomic energy", it uses ultra-cool atoms and RF fields to calculate time (actually to mesure the difference between the RF frequency and the atomic transition frequency, if I remember correctly). The power source is good'old electricty.

2) By "atomic energy", you surely meant nuclear energy (a common error of vocabulary). The processes by which energy is produced in nuclear powerplants depend only on the proprieties of the nuclei of the isotopes used (like Uranium-235), not their electronic clouds. Same thing with "atomic bombs" : they're nuclear.