Technical Archive

Breitling
Chronomat B01 41 CB014012A723378C

Breitling Chronomat B01 41 CB014012A723378C: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Chronomat 41

Technical Specifications

Breitling CB014012A723378C
Reference

CB014012A723378C

Movement

Breitling caliber Caliber B01 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Chronometer

The Heritage

The Chronomat B01 41 features the Breitling B01 automatic caliber with column-wheel chronograph function and chronometer certification. The movement offers indication of hours, minutes, small seconds and date. The case has a diameter of 41mm according to the model denomination.
Made to Measure

The strap for this watch is made to measure

On the Breitling Chronomat B01 41 the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.

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FAQ

Can a strap be fitted to the Breitling Chronomat B01 41 CB014012A723378C?

The attachment of the Chronomat B01 41 is an integral part of the case design: the transition between the case and the Rouleaux bracelet is conceived as a single body, without standard straight lug bar attachments. A generic aftermarket strap cannot adapt to this geometry. The solution exists and is of superior quality: a strap built to measure directly on the watch by <a href="/pages/casati-booking">Casati Milano</a>, with precise measurement of the actual lug dimensions.

How does the bespoke strap process work for this model?

The process begins by bringing the watch to the atelier, where the craftsman takes direct measurements of the lug geometry — internal curvature, transition profile, actual width. No standard sizes or generic templates are used. The strap is then constructed on those exact dimensions, with the client choosing leather, colour, stitching and closure together. The result is a strap that meets the case without gaps, play or compromise.

Which leather best suits the character of the Breitling Chronomat B01 41 in rose gold and steel?

The rose gold and steel combination calls for leathers that are both robust and refined. Fine-grain box calf is a balanced choice: discreet texture, excellent longevity, and a natural patina that improves with wear. For a more formal reading, polished Hornback alligator with contrast stitching enters into direct dialogue with the rose gold reflections. The buckle should be chosen in harmony with the case metals — brushed rose gold or satin steel, never mixed arbitrarily.

How long does a well-made bespoke strap last?

A strap built with first-quality leather, hand-stitched with waxed thread and edge-finished with wax and a burnisher, will last years of daily use — often longer than a high-end production strap. Durability depends on the leather chosen, use and maintenance: vegetable-tanned leathers tend to develop a patina that improves appearance over time, while chrome-tanned leathers are more water-resistant. Regular conditioning with a nourishing cream significantly extends the life of the strap.

What is the history of the B01 movement and why does it matter for the Chronomat?

The B01 calibre is the first chronograph movement developed entirely in-house by Breitling, introduced in 2009 after years of manufacturing research. The choice of a column wheel to control the chronograph — rather than the less costly cam-and-lever system — is a precise statement of intent: priority to mechanical quality over cost reduction. Certified as a COSC chronometer, it guarantees a precision of ±2 seconds per day. In the Chronomat B01 41, this movement finds its natural home: a serious instrument inside an equally ambitious case.