Atomic Timekeeping

The Atomic Timekeeping collection is synchronized
to the atomic clock for superior accuracy.

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Precise Time

We launched the world’s first multi-band Atomic Timekeeping watch in 1993, and remain a pioneer of this field. Combined with our proprietary light powered Eco-Drive technology, when owning a Citizen Atomic Timekeeping watch you will get precise time powered by any light source.


The Element of Precision. With a margin of error of just one second in 100,000 years, CITIZEN’s watches receive radio signals from an atomic clock to set the time correctly. To avoid interference with smartphones and other electronics used during our busy days our Atomic Timekeeping watches receive radio signals late at night to adjust your watch to the correct time and day.

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