The Extra-fort Roue à Colonnes Retour en Vol (column wheel flyback) combines two key features of classic chronographs: the column wheel and the flyback complication. The column wheel, visible through the sapphire glass caseback, is the heart of the chronograph. The flyback complication (retour en vol) allows for quick resetting and restarting of the chronograph with a single push, a feature originally designed for pilots in the 1930s. The dial showcases frappé finishing with circular and azurée counters.
Movement Type
Automatic
Jewel Count
27 jewels
Power Reserve
48h
Frequency
28,800 vph (8 Hz)
Diameter
30mm
Display Type
Analog
Rotor Type
unidirectional
Winding
ball bearing
Shock Protection
Incabloc
BRAND
Eberhard & Co.TYPE
AutomaticSTATUS
In ProductionMANUFACTURE
ÉbaucheCOUNTRY
SwitzerlandALSO KNOWN AS