You no longer need to set the time manually. Setting the time manually is troublesome. You can either announce the time on the radio and then look at the clock, or compare it with your smartphone. If you forget, your watch will follow it. Radio technology frees you from this job and makes your life easier. It automatically receives the clock signal based on the atomic clock once a day and updates it at the correct time. The radio clock receives radio signals every day, synchronized in time, day and date, but only received late at night to detect whether the signals of smart phones and other electronic devices are disturbed during the day.