Preparation For Use - Breitling NAVITIMER HERITAGE Mode D'emploi

YOUR BREITLING CHRONOMETER
A chronometer is a high-precision instrument that has successfully passed
the entire battery of tests imposed by COSC (Swiss Offi cial Chronometer
Testing Institute), a neutral and independent body which individually tests
each movement according to the prescriptions in force.
The certifi cation test for wristwatches with sprung balance oscillators,
according to standard ISO 3159, consists of observing each movement for
15 days and 15 nights, in 5 positions and at 3 different temperatures (8°C,
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 "chrono-
graph", which is a complicated watch fi tted with an additional mechanism for
measurement of the duration of an event. A chronograph is not necessarily
chronometer-certifi ed, but all Breitling chronographs bear the much-coveted
title of "chronometer".
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PREPARATION FOR USE

WINDING – TIME-SETTING
NB: mechanical watches endowed with a date indicator window
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. Wind the watch through approximately 40 clockwise
turns of the crown.
2. Pull the crown out to position 2, turn it clockwise to
adjust the calendar to the day prior to the activation
date.
3. Pull the crown out to position 3. Turn the hands
forward until the correct date jumps into place, at
midnight. Then adjust the hour and minute.
4. Push the crown back into position 1.
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