Omega “Megaquartz Marine Chronometer”

European Watch Clock and Jeweliery Fair 1976 BF 338
The only wristwatch which can claim a “Marine Chronometer” title which it earned by undergoing 65 days of tests at the Neuchatel Astronomical and Chronometric Observatory. Maximum rate drift recorded was ± 0,003 second per day This fabulous accuracy, corresponding to 1 .1 seconds over an entire year, comes from its auarts “heart” which vibrates 2,359,296 times per second, a frequency which is divided by an integrated circuit that is itself a masterpiece of electronic microrniniatunisation.
(OMEGA “Megaquartz Marine Chronometer”)