Breitling AB0930D31L1P1 Mode D'emploi page 10

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 pre-
scriptions 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 diff erent 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 "chronograph", which is a
complicated watch fi tted with an additional mechanism for measurement of the dura-
tion 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
1. Wind the watch completely in a clockwise direction.
Do not force.
2. Pull the crown out to position 2 and adjust the hour and minute.
3. Push the crown back into position 1.
Nota bene : wind the watch completely each day (preferably at the same time).
Do not force.
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