The CO 390 is an automatic movement manufactured by Corum. Based on the Eterna 3903A, it measures 30mm in diameter and operates at 28,800 vph with a 65-hour power reserve. The caliber contains 30 jewels and is not in-house, instead drawing from the Eterna platform. It remains in production.
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 3xxALSO KNOWN AS
