The CO 403 is an automatic movement manufactured by Corum. It measures 30mm in diameter, contains 30 jewels, beats at 28,800 vph, and delivers a 65-hour power reserve. The caliber is based on the Eterna 3903A with center seconds and is not in-house. It remains in production as part of Corum's CO 4xx family.
Movement Type
Automatic
Jewel Count
30 jewels
Power Reserve
65h
Frequency
28,800 vph (8 Hz)
Diameter
30mm
Display Type
Analog
BRAND
TYPE
AutomaticSTATUS
In ProductionMANUFACTURE
ÉbaucheCALIBER FAMILY
CO 4xxALSO KNOWN AS
