28,800 vph (4 Hz)
The Oris caliber 644 is an automatic movement introduced in 1997, based on the ETA 2836-2. It operates at 28,800 vph with Incabloc shock protection and a ball-bearing rotor. The movement features a small seconds subdial at 9:00 and a pointer date function, distinguished by Oris's characteristic red rotor. The caliber 641 is the COSC-certified chronometer variant of the 644.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Frequency
28,800 vph (4 Hz)
Display Type
Analog
Rotor Type
Ball Bearing
Shock Protection
Incabloc
COMPLICATIONS
Date
FEATURES
Small Seconds
More Oris movements
QUICK FACTS
FOR WATCH DEALERS
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