Breitling NAVITIMER 1461, User Manual

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YOUR BREITLING CHRONOMETER
A 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,
according 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. A chronograph is not neces-
sarily chronometer-certified, but all B
REITLING
chronographs carry the much-
coveted title of “chronometers”.
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 mecha-
nism that is set into motion between 8 pm and 3 am. It is there-
fore vital to avoid adjusting the calendar or moving the time
backwards during this period.
1. Wind the watch by 40 clockwise turns of the crown.
2. Pull the crown out to position 2. Turn the hands so as
to make the calendar jump once when the hands pass
through midnight. Then adjust the hour and minute.
3. Push the crown back in to position 1.