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Breitling · Chronomat B01 41

Strap for Chronomat 41

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
20 mm strapsAll Breitling
Lug width20 mm
Case diameter41 mm
ReferenceAB014012G712378A
FamilyChronomat B01 41
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

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Straps for the Chronomat B01 41 AB014012G712378A

Selected for the 20 mm lug width

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The Chronomat B01 41 AB014012G712378A, seen from the bench

The Breitling Chronomat B01 41 (reference AB014012G712378A) is a 41mm stainless steel chronograph born in 1984 as the official timepiece of Italy's Frecce Tricolori aerobatic team. It houses the in-house Breitling B01 caliber, a manual-wind mechanical chronograph with column-wheel mechanism offering hours, minutes, small seconds, date, and 70-hour power reserve, certified as a chronometer by COSC. The case features a bidirectional ceramic bezel with characteristic rider tabs and polished-satin steel surfaces. The lug width is 20mm, a dimension derived from the case's geometric proportions, requiring curved strap attachments for proper visual continuity and fit.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 41 AB014012G712378A?

The Breitling Chronomat B01 41 (ref. AB014012G712378A) has a lug width of 20mm. This measurement should be taken with a calliper between the two lugs at the spring bar location to ensure a precise, play-free fit.

What is the best strap for the Breitling Chronomat B01 41?

For the stainless steel Chronomat B01 41 (41mm case), the most coherent options are: alligator leather for a sport-elegant aesthetic, vegetable-tanned calf leather for those seeking a developing patina over time, shell cordovan for a more formal profile, and a shaped rubber strap with deployant clasp for intensive use. The choice depends on usage and dial colour.

How do you change the strap on a Breitling Chronomat B01 41?

To replace the strap on the Chronomat B01 41, you will need a spring bar tool suitable for 20mm bars fitted within the lugs. The Chronomat's lugs are slightly curved: a forked-tip tool is recommended to avoid scratching the steel. This can be done independently with the correct tools or entrusted to a watchmaker.

Are there aftermarket straps compatible with the Breitling Chronomat B01 41?

Yes. Any 20mm curved-end strap is compatible with the Breitling Chronomat B01 41, provided the spring bars are 1.8mm in diameter. Milano Straps offers a dedicated selection of 20mm straps in various materials and finishes, verified for compatibility with this model's lug geometry.

How long does a leather strap last on a Breitling Chronomat B01 41?

The lifespan of a leather strap depends on the material, frequency of use, and exposure to perspiration and moisture. A quality artisan alligator or calf leather strap, with regular use and proper care (avoiding water and direct heat), typically lasts between 2 and 4 years. Casati Milano straps carry an 18-month guarantee against manufacturing defects.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only