Breitling reaffirms its supreme mastery of chronographs by unveiling its own split-seconds chronograph movement – one of the most sophisticated horological complications.
Developed in the spirit of instruments for professionals, this Manufacture Breitling Calibre B03 (protected by two patents) is distinguished by its innovative construction ensuring a maximum of precision, sturdiness and reliability.
To present this major technical breakthrough, Breitling has chosen its most emblematic model, the famous Navitimer, interpreted in steel or gold with an exclusive bronze-colored dial.
Few watch brands have their own mechanical chronograph movements. Fewer still also offer a proprietary split-seconds movement genuinely developed and produced in-house.
In launching Manufacture Breitling Calibre B03, officially chronometer certified by the (Swiss Official Chronometer Testing Institute), Breitling is once again confirming its leadership position in the field of mechanical chronographs.
It is also consolidating its crucial role in the development of this type of instrument – notably marked by the invention of the first independent pushpiece at 2 o’clock (1915), the second independent pushpiece (1934) and the first selfwinding chronograph (1969).
This epic saga also includes the famous 1944 Duograph – one of the great Breitling classics – that is much sought-after among collectors and equipped with an ultra-thin split-seconds chronograph movement.
AIMING FOR PERFORMANCE
With its two superimposed central chronograph hands, of which one can be stopped so as to measure an intermediate (split) time, before “catching up” (rattraper in French) with the first one still sweeping onwards, the split-seconds chronograph is considered one of the hardest watchmaking mechanisms to create.
That is why this “Grand Complication” is generally produced in small series and requires watchmakers to perform a lengthy process of adjustment and rating (correcting the clearance of the split-seconds wheel and pinion, adapting the tension of the springs, adjusting the degree of penetration of the clamps, etc.). In developing its own split-seconds chronograph movement, Breitling has adopted an innovative approach to this exceptional mechanism.
True to its philosophy of “instruments for professionals”, the specialist of technical watches has opted to focus on sturdiness, precision and reliability as applied to large-scale production: “Quality in series”, as a 1940s Breitling slogan already proclaimed. The aim was to develop a system ensuring optimal performance with a minimum of components and serving to eliminate the lengthy adjustment process.
In a nutshell, to find a simple and effective solution to a complicated problem – a task that took several years of research and testing.
In developing its selfwinding split-seconds chronograph Caliber B03, Breitling worked on the basis of its Manufacture Breitling Calibre 01, an intelligent platform that has already enabled the addition of other useful functions such as second timezone or worldtime displays featuring unprecedented user friendliness.
The B03 therefore picks up all the advantages of this high-performance ‘engine’, including a 70-hour power reserve (guaranteeing enhanced rating regularity) as well as an innovative modular-type architecture. The split-seconds mechanism comprises just 28 parts.
Regrouping most of these components in a module fitted between the mainplate and the calendar mechanism not only simplifies production and assembly, but also maintenance – since the watchmaker can remove the module as a single block for any servicing or repairs. Like all Breitling movements, the Manufacture Breitling Caliber B03 is chronometer-certified by the COSC, the only precision and reliability benchmark based on an international norm.
To highlight its exceptional new ‘engine’, Breitling has chosen its famous Navitimer, the doyenne of all mechanical chronographs produced worldwide (since 1952). Equipped with a 45 mm case, the Navitimer Rattrapante comes in steel as well as a 250-piece red gold limited edition (equipped with a transparent caseback).
Both watches are distinguished by their exclusive bronze-colored dial, serving as a backdrop for the silver-toned counters and inner bezel reflecting the classic Navitimer look. In an extremely refined detail, the B logo with its anchor symbol generally adorning the base of the Navitimer chronograph hands is in this instance divided between the two seconds hands: with the B on the red chronograph hand and the anchor on the split-seconds hand.
This means the two elements are separated when the split-seconds hand is stopped, before reforming the brand signature when the hands are again overlaid. The split-seconds pusher, housed in the 3 o’clock crown, serves to stop and restart the split-seconds hand as often as desired during a timing operation – in order to measure split times or to compare the results of several competitors. The ultimate mechanical chronograph in a legendary watch.
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