Ladies/midsize automatic movement with Syloxi silicon hairspring, Paraflex shock protection, and 55-hour power reserve, used in Datejust 31 and Yacht-Master 37
Movement Type
Automatic
Jewel Count
31 jewels
Power Reserve
55h
Frequency
28,800 vph (8 Hz)
Diameter
20mm
Rotor Type
central_rotor
Winding
automatic_bidirectional
Shock Protection
paraflex
