Breguet 2067 Manual De Instrucciones página 9

Crown, pushbuttons and their functions
X1 Winding position
English
X2 Quick date correction position
X3 Time setting position
I Chronograph Start/Stop
II Zero reset for the chronograph
and hours/minutes counters
Flyback function
This function makes it possible to reset the current time
measurement and instantly start a new one.
After starting the chronograph by pressing pushbutton I, a single
press on pushbutton II triggers three operations: the hand stops, the
time measurement returns to zero and, as soon as pushbutton II, is
released, the hand starts a new time measurement.
I - Chronograph Start/Stop
X1 - Winding position
X2 - Quick date correction position
X3 - Time setting position
II - Zero reset for the chronograph and hours/minutes counters