A Radio Controlled clock (often referred to as RC or DCF) is set to an atomic clock by radio signals due to the movement in the clock. This ensures that your clock always displays the correct time and you do not have to change your clock to summer- or winter time anymore\n\nThe Radio Controlled clocks by NeXtime are controlled by the DCF77 atomic clock located near Frankfurt in Germany. This atomic clock gives a signal within a radius of about 1500 kilometers. Our clocks represent the Central European Time (CET). Note: England is not in this time zone.\n\nAccording to the calculation, the accuracy is 1 second per 1 million years. Do you want to be sure that you always have the exact time? Then choose Radio controlled!