Atomic watches always keeping you on time. Several times a day atomic watch receives the official US, Japan, or Europe government time via a time calibration signal from the atomic transmitter, eliminating the worry about changing your atomic watch for Daylight Saving Time. Our atomic watches also feature a perpetual calendar, eliminating the need to adjust your watch for calendar month to month inconsistencies and Leap Year. Below are some of the latest designs on Casio waveceptor atomic watch collection.