The Radio Controlled watches
The radio controlled watches receive a signal by the long-wave transmitter , which continually sends out time signals of the Braunschweig caesium atomic clock. Atomic clocks do operate with a deviation of only 1 second in a million years which is very close to the ideal time. If the watch is out of reach to receive the standard radio waves (max.1500km distance from radio wave transmitter, depending on atmospheric conditions ) it operates with the high timekeeping accuracy of a modern quartz watch
Water resistant
Label
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explanation
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No Label
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Not waterproof. Sensitive to moisture.
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WR 3 Bar
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Watches are marked as „water resistant“ if they are resistant to perspiration, drops of water, rain etc. These watches are designed for normal daily use and must not be used under conditions with extreme fluctuations in water pressure and temperature.
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WR 10 Bar
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If the pressure is also given, the test conditions are tightened up. Meets absolutely all requirements for frequent bathing, swimming, water sports.
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WR 20 Bar
WR 30 Bar
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If the pressure is also given, the test conditions are tightened up. Meets international requirements concerning safety regulations for hobby and professional divers.
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WR 100 Bar
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If the pressure is also given, the test conditions are tightened up. Meets international requirements concerning safety regulations for deep-sea divers.
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