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 wristwatch chronographs with quartz oscillators consists in
observing each movement for 13 days and 13 nights, in several positions and at 3 different
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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MAIN HANDLING PRINCIPLES
The Aerospace is a multi-function chronograph.
To access a function, press pusher B. The digital displays
will light up and display the currently selected function :
• Upper display = function name,
• Lower display = function details,
Press B again in order to have the function switch to the next
in line.
Once the function required is displayed,
• Hold B for a moment to access and set up the function,
• Press A or C to use the function,
Please note that the hour and minute hands will promptly move away from the upper
and lower digital displays to increase the readability of the function while in use.
The hands will move into a neutral position displaying 9:15.
Once you are done selecting and/or using the function, the hands will go back to their
original position displaying time.
CHR
SP
AEROSPACE
CHRONOMETER
MM:SS:SS
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A
B
C