Breitling X82310D51B1S2 Mode D'emploi page 11

YOUR BREITLING CHRONOMETER
A chronometer is a high-precision instrument that has successfully passed the entire
battery of tests imposed by the 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 wristwatch chronographs with quartz oscillators consists in
observing each movement for 13 days and 13 nights, in several positions and at 3 diff erent
temperatures (8°C, 23°C, 38°C). To earn the prestigious chronometer label, a movement's
performances must meet 6 very strict criteria, including a daily variation in rate of within
±0.07 seconds, corresponding to an annual precision of ±25 seconds. The variation in rate
of the SuperQuartz™ calibre fitted in your Breitling watch far and above exceeds these
demands, achieving a level of ±15 seconds per year.
The term "chronometer" should not be confused with that of "chronograph", which is a
complicated watch fitted with an additional mechanism used for measuring the duration
of an event. A chronograph is not necessarily chronometer-certified, but all Breitling chro-
nographs carry the much-coveted title of "chronometer".
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PREPARATION FOR USE
DATE ADJUSTMENT – TIME-SETTING
1. Pull the crown out to position 2, and turn it counterclockwise
to adjust the calendar to the day prior to the activation date.
2. 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.
3. Push the crown back into position 1.
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