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 11 days and 11 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 7 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™ caliber fitted in your BREITLING watch far and above exceeds these demands, achieving a rate of ±15 seconds a year.
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 necessarily chronometer-certified, but all BREITLING chronographs carry the much-coveted title of “chronometers”.
The different functions are selected by rotating the crown. The latter has two axial positions:
and pulled out.
In the neutral, fast rotation of the crown enables you to move from one function to another. The crown may be turned forwards (clockwise) or backwards (counter-clockwise).
Slow rotation of the crown lights up the two digital displays for around 6 seconds. The light goes out when the alarm, the timer or the minute repeater strike.
N.B. This type of lighting is NVG-compatible (i.e. with night vision goggles).
In the second position, rotating the crown enables you to set the functions.
A brief push in neutral position actions the functions.
You can choose between two display modes for the time of day:
24H: military style
2x12H periods: a.m. and p.m.
Put the watch in the 24H time readout mode (see 12H/24H Display).
If desired, return the watch to the 2x12H mode.
If the watch loses or gains a few seconds, after some time on the wrist for instance or following setting operations, it is easily reset to the exact second.
Check that the minute display corresponds to the exact time; if it does not, add or substract a minute (see Setting the watch to the correct time).
Note: the calendar is programmed to provide the exact date during a full leap-year cycle of four years, thus requiring a correction every February 29 only.
Leap-year adjustments: the calendar is programmed to switch automatically from February 28 to March 1; it will therefore have to be adjusted manually every February 29 by moving the date back by one day, from March 1 to February 29.
Please note: although the watch does not normally display the month, the latter must of course be correctly set to enable the perpetual calendar to function normally.
After a battery replacement or, exceptionally, a manipulation error, it may be necessary to synchronize the time shown by the hands with that displayed by the digital readout.
When travelling to another timezone or adjusting the watch to or from summer (daylight saving) time, the hands can be moved forward or backward by one or more complete hours without affecting the indications of the minute and seconds.
Please remember not to rotate the crown slowly after rotating it rapidly to change timezones.
To cancel an ongoing countdown operation:
This watch is designed to display, if desired, another timezone in addition to local time.
Note: the minute and the seconds readouts cannot be changed and always remain on local time.
Remember to take into account the watch’s time mode (2x12H or 24H) when selecting and displaying a second timezone (see 12H/24H display).
While the chronograph is in use, any other function of the watch can be selected and used. However, the watch must be returned to the CHR (chronograph) mode for stopping and reading chronograph times and returning this function to zero.
The chronograph mechanism will stop automatically after 48 hours. Times shorter than 1 hour are expressed in minutes, seconds and hundredths of a second. Times longer than 1 hour are measured in hours, minutes and seconds.
To set or reset the alarm, press on the crown after selecting the AL (alarm) function.
Note: remember to take into account the watch’s time mode (2x12H or 24H) when setting the alarm to the desired time (see 12H/24H display).
The minute repeater is a device that provides a sonic indication of the hours and minutes simply by pressing on the crown when the latter is in the neutral, local-time, seconds-date or day-date position.
Four different sonic codes correspond respectively to:
1 hr 16 min. = 1 hr + 1 quarter hour + 1 min.
15hrs 42min. = 3 hrs + 2 quarter hours + 2x5 min. + 2 min.
The scale engraved on the back of your watch allows you to convert five of the weight and measurement units most commonly used in aviation. Combined with the slide rule, it is a handy way of preparing a flight plan.
|Gal. UK||US Gal.||Liter||Lb.*||Kg*|
Example: multiply the number of UK gallons by 1.20 to determine the equivalent value in US gallons, or by 3.65 to obtain the mass or weight in kg of such a volume.
* Important note: liquid to weight measurement conversions (Lb., Kg) relate to Jet fuel (kerosene).
The bezel of your watch is fitted with 4 hour-markers called rider-tabs: they are used as points of reference to mark the time of departure or a limit time one wishes to remember.
On models with no chronograph functions, they also serve as “minute chronograph” enabling one to measure time elapsed in minutes.
Rider-tabs make it easier to rotate the bezel by giving a better grip (especially when wearing gloves) and additionally protect the glass.
This watch’s movement includes a battery end-of-life (EOL) warning system, signalled by the digital readout’s flashing mode. The battery must be replaced within the next few days by an authorized BREITLING agent. Also ask for a water-resistance test to be performed on the watch.
Used batteries and used watch components should not be disposed in litters, but correctly recycled according to local regulations. We recommend the disposal of such parts via your watch dealer. You will thereby contribute to environmental and public health protection.
Your BREITLING chronometer is a sophisticated instrument which is constantly subjected to a wide variety of stresses and strains. Within a very small volume, a large number of components contribute to handling all the functions. Their mechanical action inevitably leads to a certain amount of wear and tear, which may be controlled by maintenance consisting of renewing the lubrication and replacing worn components. Like any precision measurement instrument, your watch must be regularly maintained in order to function at its highest level of potential: we recommend a regular service every two years, while the complete overhaul should be scheduled about every five years. Your authorized BREITLING dealer will be pleased to handle this for you.
The movement of your chronometer is protected by a complex case fitted with gaskets to ensure its water-resistance. Under the influence of various external agents – perspiration, chlorinated or salt water, cosmetics, fragrances or dust – these gaskets gradually deteriorate and must be regularly replaced. If used intensively in water, we recommend that this be done once a year as part of a service. If the watch is only occasionally used in water, this operation may be carried out every two years. Moreover, a water-resistance test should be done every year; it takes only a few minutes and can be performed by your authorized BREITLING dealer.
BREITLING models are water-resistant to varying degrees. The extent of the water-resistance, expressed in meters (M) is a standard value and does not indicate an absolute depth of immersion. The crown and pushpieces must not under any circumstances be operated under water or when the watch is wet. The table below indicates the conditions in which your watch may reasonably be used, according to its degree of water-resistance.
|Activities / degree of water-resistance||3bars / 30M / 100FT||5bars / 50M / 165FT||10bars / 100M / 330FT||50bars / 500M / 1650FT+|
|Shower, swimming, surface water sports||✔||✔||✔|
|Water-skiing, dives, snorkeling||✔||✔|
BREITLING genuine leather straps are crafted with the most refined materials and represent extremely high-quality products. Like all objects in natural skin (shoes, gloves, etc.), their length of life varies considerably, according to the conditions in which they are worn. In particular, water, cosmetics and perspiration accelerate the aging process. A metal or synthetic BREITLING bracelet is thus better suited to activities involving frequent contact with water or humidity.
BREITLING metal cases and bracelets are made from the finest alloys and guarantee sturdiness and wearer comfort. Regular cleaning by rinsing and brushing in clear water will keep your watch shiny. This operation is strongly recommended after each immersion in salty or chlorinated water. For watches fitted with a leather strap, proceed in the same manner, while avoiding getting the strap wet.
Like any valuable objects, BREITLING chronometers deserve special care. It is important to protect them from jarring and knocks by hard objects, and not to expose them to chemical products, solvents, dangerous gases, or magnetic fields. Moreover, your BREITLING chronometer is designed to run smoothly at temperatures ranging between 0°C and 50°C.