Citizen atomic watch is a wristwatch that is radio controlled to keep the most accurate time and calendar on earth. You never need to set the time or the date of these atomic watches simply because they receive radio signal that keeps them in perfect synchronization with the U.S. Atomic Clock in Colorado. Some Citizen atomic watches are called multi-band which means not only they keep a right time in North America but in Europe and Asia as well. Below is a list of the current Citizen radio controlled watch collection.