Premier B25 Datora 42 - Watch Breitling - Free user manual and instructions

Product type	Mechanical chronograph wristwatch
Brand	Breitling
Model	Premier B25 Datora 42
Movement	COSC certified chronometer
Main functions	Hours, minutes, seconds, calendar (day, date, month), moon phase, chronograph (short times with or without interruption), tachymeter, solar compass
Winding	Manual, about 40 crown rotations clockwise
Case diameter	42 mm
Water resistance	Varies by model: from 30 m (3 bars) to 500 m (50 bars)
Strap	Genuine leather or metal (synthetic possible)
Care and cleaning	Water resistance check every 2 years (every year for intensive aquatic use). Clean with fresh water and gentle brushing. Avoid chemicals, solvents, magnetic fields
Usage precautions	Do not operate crown or pushers underwater. Avoid calendar adjustments between 8 pm and 4 am. Keep between 0°C and 50°C
Maintenance	Periodic service by Breitling or an authorized dealer for lubrication renewal and replacement of worn parts
General information	High-precision timekeeping instrument; the term "chronometer" should not be confused with "chronograph"

Frequently Asked Questions - Premier B25 Datora 42 Breitling

How do I wind my Premier B25 Datora 42 watch?

Perform about 40 crown rotations clockwise (position 1).

How do I set the date, month, and day?

Pull the crown to position 2. Turn it counterclockwise to set the date and month. Use the pusher at 10 o'clock to set the day. Avoid any adjustments between 8 pm and 4 am.

How do I use the chronograph?

Press pusher A to start, again to stop. Press B to reset. For measurements with interruptions, press A to pause and resume.

How do I use the tachymeter?

Measure the time to cover 1 km/mile with the chronograph. The seconds hand indicates the average speed on the tachymeter scale. Example: 20 seconds = 180 km/h.

How do I use the solar compass?

In the northern hemisphere, point the hour hand towards the sun; the midpoint between the hour and 12 o'clock indicates south. In the southern hemisphere, point 12 o'clock towards the sun; the midpoint indicates north.

How do I set the moon phase?

Turn the crown clockwise to first display the full moon. Count the days until the next full moon and turn the crown that many times.

What is the water resistance of my watch?

It depends on the model: from 30 m (splashes) to 500 m (diving). Check the indication on the case back. Never operate crown or pushers underwater.

How do I maintain my watch?

Clean regularly with fresh water and gently brush. Have the water resistance checked every 2 years (1 year for intensive aquatic use). Avoid shocks, chemicals, and magnetic fields.

What to do if my watch stops?

Wind it manually (40 rotations). If it does not restart, contact an authorized Breitling service center.

Can I change the strap myself?

It is recommended to have the change done by an authorized Breitling dealer to avoid damaging the case.

USER MANUAL Premier B25 Datora 42 Breitling

Breitling Breitling

BREITLING 1884

INSTRUCTIONS FOR USE

PREMIER B25 DATORA 42

PREMIER B25

DATORA 42

MONIAB RETTLING 1 2 3 A B 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 105 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 106 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 107 108

Aguille des heures bourd hand Tertemeterger Lancelle delle ore Aguille des heures Ferrante des heures Ricciens capitrate Aguille des minutes Bourd hand Wertemeterger Lancelle delle ore Ferrante des minutes Ricciens capitrate Aguille des secondum Second hand Tertemeterger Lancelle delle secondi Aguille des secondi Ferrante des secondi Ricciens capitrate Aguille des secondum Second hand Tertemeterger Lancelle delle secondi Aguille des secondi Ferrante des secondi Ricciens capitrate

KM H Techophysine Tochophysine scale Tochophysine scale Scale Iochromatina Scale Iochromatina Imagerolino Tazoeoporin タイタ 創動者 創動計 E 5 200nm Phases de Bore Mason phoors Mondophase Face frame Face frames Face frames Kappapatan (cyan) phase ムーンフェイス 月曜日光 月曜日光 Date Date Durum Date Fecha Date Beta 日光 日期開本 日期显示

FRANÇAIS

MISE EN SERVICE 5

PARTICULARITÉS

MAINTENANCE

ENGLISH

PREPARATION FOR USE 15

SPECIAL CHARACTERISTICS 18

MAINTENANCE

DEUTSCH

INBETRIEBNAHME

BESONDERHEITEN

WARTUNG

ITALIANO

Up-to-date user manuals are available on breitling.com under SERVICE section.

VOTRE CHRONOMÈTRE BREITLING

A chronometer is a high-precision instrument that has successfully passed the entire battery of tests imposed by 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 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 "chronograph", which is a complicated watch fitted with an additional mechanism for measurement of the duration of an event. A chronograph is not necessarily chronometer-certified, but all Breitling chronographs bear the much-coveted title of "chronometer".

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 4 am. It is therefore vital to avoid adjusting the calendar or setting 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 3. Turn it so that the hour and minute hands point to 06:25.

3. Push the crown into position 2. Turn it counter-clockwise to adjust the date, and month. Set the watch to the correct month and previous date. Press the push-piece located on the case-side at 10 o'clock with a soft pointed object to adjust the day. Set the day to the previous day.
   Turn the crown clockwise to adjust the moon-phase. First display the moon-phase to "full moon". Set the moon-phase to the previous day, using a lunar calendar. Count how many days are remaining until the next moon-phase. Then turn the crown clockwise as many times as there are days. The moon-phase will move 1 step backwards for each day.

4. Pull the crown out to position 3. Move the hands forwards until the correct day, date, month and moon-phase are displayed, at midnight. Set the hour and minute hands.

5. Push the crown back into position 1.

USING THE CHRONOGRAPH

I. MEASURING A SINGLE SHORT TIME

1. Press pushpiece A to start the chronograph. Hand 2 shows the measurement in seconds.
2. Stop the measurement by pressing pushpiece A once more. The measurement is made in minutes [totalizer 1], seconds and 14 of a second [hand 2].
3. Reset the chronograph to zero by pressing pushpiece B.

II. MEASURING AN INTERRUPTED SHORT TIME

1. Press pushpiece A to start the chronograph. Hand 2 shows the measurement in seconds.
2. To interrupt the measurement, press pushpiece A once more. To restart the time measurement, press pushpiece A. This procedure makes it possible to add up several short times.
3. The chronograph is reset to zero by pressing pushpiece B, once the final measurement has been stopped.

SPECIAL CHARACTERISTICS

THE TACHOMETER

The tachometer is the graduation on the dial or flange of your Breitling chronograph enabling you to determine average speeds or hourly productivity rate, based on an observation period of less than 60 seconds.

1. Average speed

Using the chronograph to measure the time required to cover a kilometer or a mile. The final position of the second hand indicates the average speed. If it takes 20 seconds to cover 1 km or 1 mile, the scale respectively indicates an average speed of 180 km/h or 180 miles/h.

2. Hourly productivity rate

Measuring the time required to produce 1 unit. If the chronograph is stopped at 40 seconds, the tachometric scale indicates 90, corresponding to an hourly productivity rate of 90 units.

12 11 10 9 8 7 6 5 4 3 2 1 0 10:30

12 11 1 10 2 4 7 5 6 7 8

SUN COMPASS

Your Breitling chronometer may be used as a sun compass, thus enabling you to determine North and South. For regions that have instated daylight saving time, subtract one hour when aligning the watch.

In the Northern Hemisphere

Point the hour hand precisely towards the sun. In relation to the watch dial, the point located midway between the current time and 12 o'clock indicates South, North being exactly opposite.

In the Southern Hemisphere

Point the hour-marker located at 12 o'clock on the dial precisely towards the sun. In relation to the watch dial, the point located midway between the current time and 12 o'clock indicates North, South being exactly opposite.

Diagram showing two circular clock faces with directional arrows and sun icons, likely illustrating a weather or solar cycle concept.

MAINTENANCE

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 relubrication 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: the frequency of this operation varies according to actual use. Breitling or your authorized retailer will be happy to handle the procedure.

WATER RESISTANCE

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. That is why water resistance cannot be permanently guaranteed. If used intensively in water, we recommend having an annual water resistance check conducted. In any event, such an appraisal must be done every two years. This operation, which takes only a few minutes, may be conducted by a Breitling authorized maintenance centre, or by an authorized retailer (www.breitling.com).

Breitling models are water-resistant to varying degrees. The extent of the water resistance, expressed in metres [M], is a standard value and does not indicate an absolute immersion depth. 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	3 bar/30 M/100 FT	5 bar/50 M/165 FT	10 bar/100 M/330 FT	50 bar/500 M/1650 FT+
Splashing	√	√	√	√
Shower, swimming, surface water sports		√	√	√
Water-skiling, dives, snorkelling			√	√
Diving				√

If your watch is equipped with a screw-lock crown, ensure that this is locked before any use in water. This also applies to screw-lock pushpieces.

USEFUL TIPS

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 ageing process. A metal or

synthetic Breitling bracelet is thus better suited to activities involving frequent contact with water or moisture.

Breitling metal cases and bracelets are made from the fi nest alloys and guarantee sturdiness and wearer comfort. Regular cleaning by rinsing and brushing in clean water will keep your watch shiny. This operation is strongly recommended after each immersion in salty or chlorinated water. For watches fi tted with a leather strap, the same advice applies, as well as avoiding getting the strap wet.

WHAT TO AVOID

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.

IHR BREITLING-CHRONOMETER

Diagram showing two circular clock faces with directional arrows and sun icons, likely illustrating a weather or solar cycle concept.

MANUTENZIONE

Diagram showing two circular clocks with directional arrows and sun icons, likely illustrating a weather or solar cycle concept.

MANUTENÇÃO

Diagram showing two circular clocks with red arrows indicating rotation and sun icons, illustrating Earth's axial tilt and solar position.

メンテナンス

Diagram showing two circular clock faces with red arrows indicating direction and sun icons, likely illustrating a weather or solar concept.

保养须知

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