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Regular signal reception ensures that your watch always shows the correct time. The exact time is transmitted to the watch from atomic clocks - the most precise watches in the world. No setting, no resetting, always on time.

Radio Watches

Automatically on time
The advantages of radio-controlled watches are obvious: Once they have been set to the relevant time zone, they always display the exact local time. All CASIO radio watches receive signals almost anywhere in Europe. Some models even receive signals in North America, parts of Canada and Mexico (the radio tower in Fort Collins sends signals for a radius of up to 3,200 km) and even in Japan or China.. In Europe, the change from summer to winter time is also completely automatic. Here you can learn about the technology that makes it possible, and about how your watch picks up the time.

The displayed time matches your computer's system clock - not the actual atomic clock's time. The model shown here receives DCF and MSF radio signals.
Questions Answers
Why have a radio-controlled watch?  
Where does the time come from?
How accurate are atomic clocks?
How does the time reach the watch?
What kind of signal is transmitted?
What happens when I travel?

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