Atomic Timekeeping

Bold design. Superior accuracy. A margin of error of

just one second in 100,000 years.

Time Signal Reception

Using radio control, this technology automatically updates the time and date of your watch based on a time signal from an atomic clock with a margin of error of one second every 100,000 years. Time signals are received from transmitters, or atomic clocks, in four different regions: Europe, the United States, China, and Japan.

  • Applies to world multiband models.
  • Map is a rough illustration only.
  • Concentric circles indicating time signals on the map are purely for illustrative purposes and do not indicate actual ranges.
  • Different models have different coverage
  • Reception can be affected by radio noise, local topography, buildings and weather.
  • Time differences and city names may change depending on the country/territory.