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Citizen Eco-Drive Atomic Timekeeping

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Citizen launched the world’s first multi-band Atomic Timekeeping watch in 1993, and even in today's competitive timepiece market, remains a pioneer in this field.

Combined with proprietary light powered Eco-Drive technology, owning a Citizen Atomic Timekeeping watch means you get precise time powered by any light source. Anywhere. Always.

Citizen designed the A-T collection with an element of precision in mind. With a margin of error of just one second every 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, Atomic Timekeeping watches automatically receive radio signals late at night to adjust your watch to the correct time and day.