A radio-controlled watch/clock emits no radio waves but only receives standard radio waves.
Thus, it does not have any effect on human body. People who have a pacemaker or other medical devices can safely use a radio-controlled watch/clock. Like ordinary watches/clocks, it is safe to use a radio-controlled watch/clock anywhere, including in a hospital.
(Note): The above information applies to members of the Japan Clock & Watch Association and their products.
