Breitling · Chronomat B01 44

Strap for Chronomat 44 Stainless Steel / Blue / Rubber

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter44 mm
ReferenceAB011011/C788/145S
FamilyChronomat B01 44
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 44 AB011011/C788/145S

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 AB011011/C788/145S, seen from the bench

The Chronomat B01 44 is equipped with the in-house caliber B01 with column-wheel chronograph function and chronometer certification. The movement offers hours, minutes, small seconds and date indication. Case with 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 AB011011/C788/145S?

The lug width of the Breitling Chronomat B01 44 AB011011/C788/145S is 22 mm, measured internally between the two lug horns. This is the standard measurement for all compatible straps for this reference.

What is the best strap for the Breitling Chronomat B01 44?

For the Chronomat B01 44 with a black dial, the most coherent choices given its tool-watch character are: hornback alligator in tobacco brown or black, polished box-calf leather, shell cordovan for those prioritising durability and patina, or vulcanised rubber for sporting use. A stainless steel 316L deployant clasp ideally complements leather options.

How do I change the strap on a Breitling Chronomat B01 44?

To replace the strap, remove the 22 mm spring bars connecting the strap to the case lugs. Use a dedicated bifurcated spring bar tool, gently levering between the lug and the strap to release the bars. It is advisable to work on a soft surface to protect the case and bezel from scratches.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 AB011011/C788/145S?

Yes, the Chronomat B01 44 AB011011/C788/145S uses standard 22 mm spring bars and is therefore compatible with any aftermarket strap in that width with a straight end. Milano Straps offers a selection of handcrafted 22 mm straps, with fitting verified for the lugs of this specific model.

How long does a leather strap last on a Breitling Chronomat B01 44?

Longevity depends on leather quality, frequency of use, and exposure to perspiration and moisture. A quality calf leather strap has an average lifespan of 12 to 24 months with daily wear. High-grade shell cordovan and alligator, thanks to their denser fibre structure, typically last 3 to 5 years. Regular conditioning with a neutral leather cream significantly extends strap life.

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