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 width20 mm
Case diameter41 mm
ReferenceAB014012Q583431X
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

Straps for the Chronomat B01 41 AB014012Q583431X

Selected for the 20 mm lug width

All 20 mm straps →

The Chronomat B01 41 AB014012Q583431X, seen from the bench

The Breitling Chronomat B01 41 AB014012Q583431X is a 41mm stainless steel chronograph born in 1984 as an operational instrument for aerobatic patrol teams. It features the in-house COSC-certified B01 caliber, an automatic mechanical movement with column-wheel chronograph, small seconds at 6 o'clock, date window, and pushers at 2 and 4 o'clock. The 20mm lug width accommodates aftermarket straps, though the curved case profile and integrated rouleaux bracelet require precisely shaped or pre-curved strap ends for proper fit and aesthetics.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 41 AB014012Q583431X?

The lug width of the Breitling Chronomat B01 41 AB014012Q583431X is 20mm, measured between the lower lugs at their widest point. It is essential to measure directly on the case with a millimetre calliper before purchasing an aftermarket strap, as the slightly curved case profile may require tapered strap ends for proper fit and comfort on the wrist.

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

For the Chronomat B01 41, the most suitable materials are vegetable-tanned alligator with hornback grain for formal settings, matte calfskin for versatile daily wear, shell cordovan for those seeking a progressive patina and long-term shape retention, and vulcanised rubber for sporting use. The ideal choice depends on the intended context and the desired chromatic pairing with the black dial.

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

To replace the strap, use a fine-tipped spring bar tool, preferably with a forked head, to release the spring bars from the lug holes. Work on a soft surface to protect the polished case surfaces. Given the geometry of the Chronomat lugs, it is advisable to have the strap changed by a watchmaker or specialist atelier to avoid any risk of damage to the lug tips.

Are there aftermarket straps compatible with the Breitling Chronomat B01 41 AB014012Q583431X?

Yes, the Chronomat B01 41 AB014012Q583431X uses standard 20mm spring bars, making it compatible with a wide range of aftermarket straps. Milano Straps offers a curated selection specifically for 20mm lug widths, with tapered ends designed to suit the curved Breitling case profile, ensuring optimal fit and a finish consistent with the watch's quality standards.

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

Longevity depends on the material, frequency of use, and care. A quality vegetable-tanned alligator strap, worn regularly, retains its structural integrity for 2–4 years. Calfskin typically lasts 1–2 years. Shell cordovan, due to the density of its fibres, can exceed 3–4 years. Prolonged exposure to perspiration, water, and UV light accelerates wear; rotating between two straps significantly extends the lifespan of each.

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