Breitling · Chronomat B01 44

Strap for Chronomat 44 GMT Stainless Steel / Metallica Brown / Croco

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
ReferenceAB042011.Q589.737P
FamilyChronomat B01 44
MovementBreitling caliber B04 hours, minutes, small seconds, Additional 24 hours Hand (adjustable) | date | Chronograph, column wheel | chronometer
Year2012
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 AB042011.Q589.737P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 AB042011.Q589.737P, seen from the bench

The Chronomat B01 44 is powered by the automatic B04 caliber with column-wheel chronograph function and chronometer certification. It features hours, minutes, small seconds, an adjustable GMT hand and a date display. 22mm lugs complete the technical specifications of this model.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 AB042011.Q589.737P?

The lug width of the Breitling Chronomat B01 44 AB042011.Q589.737P is 22 mm. This measurement should be taken inside the lugs using a digital calliper and determines the correct width for any compatible replacement strap.

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

The most suitable straps for the Chronomat B01 44 are alligator leather for formal occasions, vegetable-tanned calfskin for everyday wear, and vulcanised rubber for sport or marine use. All must feature a 22 mm attachment. A folding deployant clasp in stainless steel is preferable to a pin buckle to ensure stability on a 44 mm case.

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

To replace the strap, a spring bar tool is required. Insert the tip into the notch of the spring bar, compress it and slide the strap free from the lug. Care must be taken to avoid scratching the stainless steel surfaces. It is advisable to work on a soft mat or to entrust the operation to a watchmaker.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 AB042011.Q589.737P?

Yes. Any strap with a 22 mm attachment and standard spring bars is compatible with the Breitling Chronomat B01 44. Milano Straps offers a selection of Italian handcrafted 22 mm straps made to order, featuring selected leathers and hand stitching, fully compatible with this reference.

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

The lifespan of a leather strap depends on the quality of the tanning, daily use and maintenance. A high-grade vegetable-tanned calfskin strap, kept away from excessive water and perspiration and periodically treated with a leather conditioner, can last between 2 and 5 years while retaining structural integrity and developing a distinctive patina. High-end alligator straps generally offer greater longevity.

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