What Is The Ideal System For Precise Timekeeping? Capturing A Time Signal From An Atomic Clock Accurate To 1 Second Every 100,000 Years, radio-Controlled Auto-Corrects The Time And Calendar In Your Watch. Combined With Citizen Light-Powered Eco-Drive Technology, The Result Is Ultraprecise Timekeeping With No Need To Replace Batteries Or Adjust The Time. In 1993, Citizen Released The World First Multi-Band Radio-Controlled Watch. As A Pioneer, We Continue To Lead The Field.