A reference number is associated to each watch model, like the Navitimer 1 BO1 Chronograph 43 in red gold (reference RB0120), or the Transocean Day & Date in steel (reference A45310).
You can find the reference number on the documents handed to you with the watch at purchase, like the International Warranty certificate, or on the case-back of your watch:

See all current models with their reference numbers HERE
Under: WATCHES > ALL THE WATCHES

The serial number is an identification number that allows you to identify your watch.
Since the year 2000, this number is unique for each Breitling watch. You can find it on the documents handed to you with the watch at purchase, like the International Warranty certificate, or on the case-back of your watch:

You can find all of our watches belonging to the current collection HERE
Under: WATCHES > ALL THE WATCHES pick the TYPE or COLLECTION, CASE, DIAL or REFERENCE NUMBER

The movements of all current Breitling watches are certified by the Swiss Official Chronometer Testing Institute (Contrôle Officiel Suisse des Chronomètres – COSC). To achieve this certification, the movement of a watch must successfully pass specific precision tests in different positions and at different temperatures, over a 15-day period. The standards set by the COSC allow a maximum average deviation of : -4 to +6 seconds per day for mechanical watches and +/- 0.07 seconds per day for quartz watches.
Watches produced before the year 2000 might in certain cases comply with these standards as well, especially if they have been serviced regularly - see our service recommendations
Under: SERVICE > USER TIPS AND MAINTENANCE > INTERVENTIONS

A chronograph is a watch with stopwatch functions, enabling the measurement of the duration of an event, using a specific hand or display that can be started, stopped and returned to zero.

A chronometer is a watch that has obtained a certification by the Swiss Official Chronometer Testing Institute (Contrôle Officiel Suisse des Chronomètres – COSC). To achieve this certification, the movement of the watch must successfully pass specific precision tests in different positions and at different temperatures, over a 15-day period. The standards set by the COSC allow a maximum average deviation of : -4 to +6 seconds per day for mechanical watches and +/- 0.07 seconds per day for quartz watches. The movements of all current Breitling watches have earned this certification.

The movement of a quartz watch is powered by a battery; it is driven and regulated by a quartz crystal and an electronic oscillator.
The current Breitling quartz models are all fitted with a thermocompensated SUPERQUARTZ TM movement, containing a temperature gauge thus offering its user a precision of +/- 15 seconds a year; their integrated circuit contains no less than 8’000 components.

The movement of a mechanical watch is driven by a spring, called the mainspring, which needs to be wound. This can either be done manually, using the crown, or, in the case of an automatic mechanical watch, by using the kinetic energy provided by the wearer’s movements. All current Breitling watches are Chronometer certified and comply with the standard set by the Swiss Official Chronometer Testing Institute (Contrôle Officiel Suisse des Chronomètres – COSC), which allows a maximum deviation of -4 to +6 seconds per day.

All boutiques and retailers are listed HERE
Under: STORES
Pick NEAR ME or any continent, country and location.

Know more about my digital passport secured by blockchain

As of October 2020 Breitling, is expanding its digital passport secured by blockchain from the Top Time to its entire collection.

This private digital passport features a digital certificate of ownership, bringing considerable added value to Breitling owners as it is empowering them to engage with Breitling as they wish, under full anonymity.

As of Mid-January 2021, the digital passport and all its benefits will be extended to previously produced Breitling watches. We will also offer on-demand digital passport generation for watches that are not currently covered based on the information that the brand currently has through time; in this case an online registration or a Boutique visit will be necessary.

For more details, please click HERE.

See also: How to claim my digital passport?

The Breitling digital passport brings Traceability, Transparency, and Tradability.

Traceability since it allows to access key information related to your watch, including product information, warranty status and full history. The digital passport provides visibility on your Breitling watch lifecycle, from the moment it is sold. Therefore, it records the service that your watch will receive, all the care to ensure its optimal functioning throughout time. Which, as in the case of a car, increases the value of your watch, should you would like to resell it, an option for which Breitling will soon provide a solution, setting up a secured market place with embedded valuation via the blockchain technology.

Transparency as it enables you to engage in a one-to-one anonymous conversation with your Breitling Squad and benefit from all the brand’s services.

Tradability as you can transfer your current ownership to the new owner of your watch via a simple and secured blockchain transaction.

Additionally, all relevant documents to your watch will be included in your digital passport from the COSC certificate to the chronometer certification of the movement to the warranty information pertaining to the watch.

For more details on your benefits, please click HERE.

See also: How to claim my digital passport?

It could not be simpler: one scan, one click.

Indeed, one scan of the QR code on the validated warranty card of your new Breitling watch with your mobile device brings up the dedicated landing page on Breitling website (or WeChat mini program specifically in China) where one click on the “GET MY CERTIFICATE” button allows you to download the unique encrypted wallet to securely claim the digital certificate of ownership that will warrant the digital passport of your watch.

For previously produced Breitling watches, you can claim your digital passport by a manual identification step, that you can access from your private Breitling account.

Of course!

By registering an account, you become a member of Breitling inner circle and benefit from even more value-added services and benefits, from managing your Breitling collection in your dedicated Breitling account to exclusive unveiling and access to private events.

Any Breitling owner has the possibility to register an entire collection of Breitling watches on Breitling.com and access at any times all related documentation (digital certificate of ownership, COSC certificate, user manual, warranty status).

You can either register an account directly on Breitling.com, or by clicking on “REGISTER MY WATCH” button on the landing page that is opening once you will scan the QR code on your new Breitling warranty card.

For more details on associated benefits, please click HERE.

All work performed by an authorized Breitling service center, and mentioned on the corresponding invoice/delivery note, is under warranty during the amount of time mentioned on the invoice.

All Breitling watches are covered by an international warranty valid for two years after purchase, except for watches with a mechanical manufacture movement, which are covered during 5 years (provided that water resistance tests are performed every 2 years following the date of purchase by an authorized Breitling service center).
The warranty coverage applies to any manufacturing defect, within the frame of the warranty conditions, and entails that Breitling will take any corrective action that is necessary to ensure the watch performs as per standard.

See the detailed warranty conditions HERE Under SERVICE > INTERNATIONAL WARRANTY Additionally, all work performed by an authorized Breitling service center, and mentioned on the corresponding invoice/delivery note, is under warranty during the amount of time mentioned on the invoice

All Breitling watches sold at our authorized stores are authentic. The Breitling boutiques and authorized retailers are listed HERE.

Beyond that, the safest way to identify an authentic Breitling is handing it to an expert, for example an authorized Breitling store or service center. Since the year 2000, all Breitling watches carry a unique identification number: their serial number, which can be checked within the Breitling network against the model reference of the watch.

Also see: What is a serial number? / What is a reference number?