Breitling · Chronomat B01 44

Strap for Chronomat 44 Stainless Steel / Black - Roman / 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/B956/131S
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/B956/131S

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 AB011011/B956/131S, seen from the bench

The Breitling Chronomat B01 44, reference AB011011/B956/131S, is a sports chronograph born from aeronautical heritage dating back to the 1980s when Breitling collaborated with the Italian Frecce Tricolori aerobatic team. The 44mm stainless steel case houses the in-house B01 caliber, COSC-certified chronometer with 47 jewels, 28,800 vph, and approximately 70 hours power reserve. The column wheel mechanism ensures precise chronograph operation. Lug width is 22mm.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 AB011011/B956/131S?

The Breitling Chronomat B01 44 AB011011/B956/131S has a lug width of 22mm. This measurement is taken with a calliper positioned at the inner opening between the lugs, at the point where the strap interfaces with the case. It is also advisable to check lug thickness to ensure the strap end piece fits correctly.

What is the best strap for the Breitling Chronomat B01 44 AB011011/B956/131S?

For the Chronomat B01 44, the ideal strap depends on intended use. A matte alligator strap in tobacco brown or midnight blue complements the professional character of the watch without competing with the dial. Vegetable-tanned Tuscan calf leather is well suited to daily wear, developing a distinctive patina over time. A ballistic nylon NATO strap remains the most faithful choice to the model's aeronautical heritage.

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

Changing the strap on the Chronomat B01 44 requires a fine-tip spring bar tool. Attention should be paid to the lug structure, which incorporates the bezel rider tabs: the spring bars are in a standard position, but the working space is limited. It is advisable to work on a soft surface and to replace the spring bars if they are more than two years old.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 AB011011/B956/131S?

Yes, any strap with a 22mm attachment is technically compatible with the Breitling Chronomat B01 44 AB011011/B956/131S, provided the end piece is correctly shaped to fit the lug geometry. Milano Straps offers bespoke handcrafted 22mm straps with straight or curved ends, tailored to the specific dimensions of 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 hide, frequency of use, and exposure to perspiration and moisture. A high-quality vegetable-tanned Tuscan calf strap typically lasts between 2 and 4 years with daily wear. Avoiding prolonged contact with water and applying a leather conditioner periodically will significantly extend the strap's service 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