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Breitling · Chronomat B01 44

Strap for Chronomat 44 Stainless Steel / Grey / Bracelet

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

Lug width

22mm
22 mm strapsAll Breitling
Lug width22 mm
Case diameter44 mm
ReferenceAB011011/M524/375A
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

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Straps for the Chronomat B01 44 AB011011/M524/375A

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 AB011011/M524/375A, seen from the bench

The Chronomat B01 44 is a stainless steel chronograph with 44mm case diameter, presented in 2020. It features the in-house Breitling B01 automatic movement with column wheel mechanism, COSC chronometer certification, and approximately 70 hours power reserve. The bidirectional bezel with rider tabs at 12, 3, 6 and 9 o'clock reflects 1980s heritage design. Lug width is 22mm.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 AB011011/M524/375A?

The lug width of the Breitling Chronomat B01 44 AB011011/M524/375A is 22mm. This measurement refers to the internal distance between the two lugs on the case and is the correct size to specify when purchasing a compatible aftermarket strap.

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

The most popular options for the Chronomat B01 44 are wide-grain alligator straps for formal occasions, vegetable-tanned calf leather for daily wear, and vulcanised rubber or NATO straps for sporting use. A steel deployant clasp enhances wearability and complements the overall robustness of the watch.

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

The strap on the Chronomat B01 44 is removed using a spring bar tool. By pressing the ends of the spring bar inward, the strap disengages from the lug. No specialist tools are required, though it is advisable to work on a soft surface to avoid scratching the case.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 AB011011/M524/375A?

Yes, any strap with a straight end and a 22mm width is compatible with the Chronomat B01 44. Milano Straps offers a selection of handcrafted straps in various materials and colours, all made with 22mm lugs and available with different lengths, buckles, or steel deployant clasps.

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

The lifespan of a leather strap depends on the material and conditions of use. A vegetable-tanned calf strap, with proper care, typically lasts 2–4 years; a high-quality alligator strap can exceed 5 years. Frequent exposure to water, perspiration, or UV rays accelerates deterioration. Milano Straps offers an 18-month warranty 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