Breitling · Chronomat B01 44

Strap for Chronomat 44 Stainless Steel / Diamond / Metallica Brown / Bracelet

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
ReferenceAB011053.Q575.375A
FamilyChronomat B01 44
MovementBreitling caliber 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 AB011053.Q575.375A

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 AB011053.Q575.375A, seen from the bench

The Chronomat B01 44 features the Breitling B01 automatic caliber with column-wheel chronograph function and chronometer certification. The watch has a 44mm case with 22mm lugs and offers indication of hours, minutes, small seconds, and date. The B01 movement integrates the chronograph functions with a column-wheel mechanism for precise button actuation.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 AB011053.Q575.375A?

The lug width of the Breitling Chronomat B01 44 AB011053.Q575.375A is 22mm. This measurement refers to the internal distance between the two lugs at the strap attachment point. Respecting this dimension is essential to ensure a proper fit and maintain visual proportion with the 44mm case.

What is the best strap for the Breitling Chronomat B01 44 AB011053.Q575.375A?

The ideal strap depends on the intended use. For versatile daily wear, a vegetable-tanned calf leather strap in cognac or dark tobacco develops a beautiful patina and complements the satin-brushed steel of the case. For formal occasions, a flat-scale alligator leather strap elevates the overall register. For sports use or humid environments, vulcanised rubber or a high-density nylon NATO strap offer the best practicality.

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

The strap is removed using a springbar tool, a thin-tipped instrument that compresses the springbar pins at each end of the strap. Work on a soft surface to avoid scratching the case. Use 22mm stainless steel springbars with a diameter appropriate for Breitling's characteristically robust lug construction, which is slightly thicker than market average.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 AB011053.Q575.375A?

Yes. Any strap with a 22mm lug width is technically compatible with the Chronomat B01 44. Milano Straps offers a range of handcrafted leather straps in Italian calf, alligator and other materials, fitted with finished lugs and springbars included. It is important to verify that the strap thickness is suitable for Breitling's slightly taller-than-average lug gap.

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

The lifespan of a leather strap depends on the quality of the tanning, daily use and maintenance. A high-quality vegetable-tanned Tuscan calf strap, with regular wear, typically lasts 2–4 years. Shell cordovan, owing to the dense fibrous structure of the equine subcutaneous layer, can last 5–7 years. It is advisable to rotate straps, avoid prolonged water exposure and condition the leather periodically with a neutral product.

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