A Corum-branded automatic movement based on the robust Eterna 3903A caliber. Powers various Bubble collection watches with hours and minutes display, featuring a generous 65-hour power reserve. The larger 30mm diameter accommodates the oversized Bubble cases.
Movement Type
Automatic
Jewel Count
30 jewels
Power Reserve
65h
Frequency
28,800 vph (8 Hz)
Diameter
30mm
Display Type
Analog
Rotor Type
bidirectional
Winding
ball bearing
BRAND
CorumTYPE
AutomaticSTATUS
In ProductionMANUFACTURE
ÉbaucheCALIBER FAMILY
BubbleCOUNTRY
SwitzerlandALSO KNOWN AS
