Pioneering Swiss automatic movement from the first Felsa caliber family with bidirectional rotor winding, introduced around 1942. The 'Bidynator' name derives from this innovative bidirectional winding system. Available in 17, 21, or 25 jewel versions. Features optional Reed's regulator. An historically significant movement that influenced automatic watch development. Related calibers include 691, 696, and 698.
Movement Type
Automatic
Jewel Count
17 jewels
Power Reserve
44h
Frequency
18,000 vph (5 Hz)
Diameter
25.6mm
Height
5.8mm
Display Type
Analog
Rotor Type
bidirectional
Shock Protection
Incabloc
BRAND
FelsaTYPE
AutomaticSTATUS
DiscontinuedMANUFACTURE
ÉbaucheLAUNCH YEAR
1942CALIBER FAMILY
BidynatorCOUNTRY
SwitzerlandALSO KNOWN AS
