Date complication variant of the Felsa Bidynator 690, part of the pioneering first-generation bidirectional winding caliber family introduced in 1942. Features automatic winding with sweep seconds and calendar/date function. Optional Reed's regulator available. A historically important movement demonstrating Felsa's early innovation in automatic watchmaking with added calendar functionality.
Movement Type
Automatic
Jewel Count
17 jewels
Power Reserve
44h
Frequency
18,000 vph (5 Hz)
Diameter
25.6mm
Height
6.2mm
Display Type
Analog
Rotor Type
bidirectional
Shock Protection
Incabloc
BRAND
FelsaTYPE
AutomaticSTATUS
DiscontinuedMANUFACTURE
ÉbaucheLAUNCH YEAR
1942CALIBER FAMILY
BidynatorCOUNTRY
SwitzerlandALSO KNOWN AS