Breitling · Chronomat B01 44

Strap for Chronomat 44 Stainless Steel / Diamond / Blackeye Gray / 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
ReferenceAB011053.F546.743P
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.F546.743P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 AB011053.F546.743P, 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 an indication of hours, minutes, small seconds, and date. The movement includes chronograph complications with a column-wheel system for greater precision in time measurement.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 AB011053.F546.743P?

The lug width of the Breitling Chronomat B01 44 AB011053.F546.743P is 22mm. This measurement should be taken between the two lugs at the narrowest point closest to the case, not at the lug tips. A 22mm strap is therefore the correct size for this reference.

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

For the Chronomat B01 44 with its 44mm stainless steel case, the most suitable materials are dark-toned alligator leather (black, midnight blue), vegetable-tanned Tuscan calf leather for those seeking a natural patina over time, and vulcanised rubber for sporting use. A standard taper from 22mm to 20mm at the buckle ensures compatibility with original Breitling hardware.

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

The strap on the Chronomat B01 44 is removed using a fine-tipped springbar tool inserted into the lateral hole on the lug to compress the springbars. The procedure does not require opening the case or specialist tools, though it is advisable to work on a soft surface to prevent scratching the case or crystal.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 AB011053.F546.743P?

Yes. Any strap with a 22mm attachment width and standard springbars is compatible with the Breitling Chronomat B01 44 AB011053.F546.743P. Milano Straps offers a curated selection of handcrafted leather, rubber and fabric straps cut specifically to 22mm, with a standard taper to 20mm at the buckle, ready for direct replacement without any adaptation.

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

The lifespan of a leather strap depends primarily on the material, care and frequency of use. A quality vegetable-tanned calf leather strap, kept away from water and excessive perspiration and periodically conditioned, can last between two and four years with regular wear. Alligator leather, with its denser and more compact structure, tends to offer greater longevity. Milano Straps provides an 18-month guarantee against manufacturing defects on all handcrafted straps.

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