Preparing The Watch For Use - Breitling BENTLEY GT II Manual De Instrucciones

YOUR BREITLING CHRONOMETER
chronometer is a high-precision instrument that has successfully passed the
entire battery of tests imposed by the COSC (Swiss Official Chronometer
Testing Institute), a neutral and independent body which individually tests
each movement according to the prescriptions in force.
The certification test for wristwatches with sprung balance oscillators, ac-
cording to the ISO 3159 norm, consists of observing each movement for 15
days and 15 nights, in 5 positions and at 3 different temperatures (8°, 23°C,
38°C). In order to earn the prestigious chronometer label, a movement's
performances must meet 7 very strict criteria, including a daily variation in
rate ranging between only –4/+6 seconds.
The term "chronometer" should not be confused with that of "chronograph",
which is a complicated watch fitted with an additional mechanism enabling
the measurement of the duration of an event.
sarily chronometer-certified, but all B
coveted title of "chronometers".
chronograph is not neces-
chronographs carry the much-
REITLING
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PREPARING THE WATCH FOR USE

WINDING – TIME-SETTING
Nota bene: mechanical watches endowed with a date, day, month
or moon-phase indicator are equipped with a complex mechanism
that is set into motion between 8 pm and 3 am. It is therefore vital
to avoid adjusting the calendar or moving the time backwards
during this period.
1. Unscrew the water-resistant crown in an anti-clock-
wise direction. Wind the watch by 40 clockwise turns
of the crown.
2. Pull the crown out to position 2 to set the calendar to
the day prior to starting the watch: turn it clockwise to
adjust the date (a) and then anti-clockwise to set the
day (b).
3. Pull the crown out to position 3. Turn the hands so
as to make the calendar jump once when the hands
pass through midnight. Then adjust the hour and
minute.
4. Push the crown back to position 1. Press it gently,
turning it gently in a clockwise direction, then tighten
it again until you feel some resistance. Do not force!
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a b