Oris Caliber 641 Watch Movement

Brand	Oris
Caliber Number	641
In-House?	No
Base Caliber	ETA 2836-2
Movement Type	Automatic, self-winding mechanical
Chronometer?	Yes
COSC?	Yes
Lignes	11.5”’
Diameter	26mm
Casing Diameter	25.6mm
Height	5.05mm (unconfirmed)
Jewel Count	27
Beat Rate	28,800 vph, 4Hz
Lift Angle	50 degrees
Power Reserve	~38 hours
Rotor Style	Ball-bearing
Rotor Winding Direction	Bi-directional
Hand-Windable?	Yes
Anti-Shock Device	Incabloc
Balance	Glucydur
Hand Count	4
Functions	Central hours; central minutes; small seconds at 9:00; central pointer date hand
Hacking Seconds?	Yes
Country of Manufacture	Switzerland, Swiss made
Known Models	Oris Classic Pointer Date (Add your watch to the comments below…)