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Breitling · Chronomat B01 44

Strap for Chronomat 44 GMT Stainless Steel / Rose Gold / Pearl / Croco

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
ReferenceCB042012.A739.745P
FamilyChronomat B01 44
MovementBreitling caliber Caliber B04 Hours, Minutes, Small Seconds, Additional 24 Hour Hand (adjustable) | Date | Chronograph, Column wheel | Chronometer
CaseMother of Pearl | Rose Gold, Stainless 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 CB042012.A739.745P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 CB042012.A739.745P, seen from the bench

The Breitling Chronomat B01 44 CB042012.A739.745P is a stainless steel chronograph with rose gold elements and an opalescent mother-of-pearl dial. It features the in-house Caliber B01 movement, certified chronometer with column-wheel construction, offering 70 hours of power reserve and a GMT function via an independent 24-hour hand. The 44mm case provides water resistance to 200 meters, while the 22mm lug width accommodates standard aftermarket straps with proper fit verification.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 CB042012.A739.745P?

The lug width of the Breitling Chronomat B01 44 CB042012.A739.745P is 22mm. This measurement refers to the internal distance between the two lugs of the case and is the key parameter for selecting a compatible strap. It is recommended to verify the measurement with a digital calliper before purchasing any aftermarket strap.

What is the best strap for the Breitling Chronomat B01 44 CB042012.A739.745P?

Given the bi-colour steel and rose gold case and the mother-of-pearl dial of the CB042012.A739.745P, a vegetable-tanned alligator strap in cognac or honey tones provides the most coherent pairing. Barenia calf leather offers an elegant and understated alternative. For sporting use, vulcanised rubber or technical nylon NATO straps are recommended, ideally paired with a deployant clasp.

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

The strap on the Breitling Chronomat B01 44 is removed using a fine-tipped spring bar tool to release the spring bars from the lugs. Place the case face-down on a soft cloth to avoid scratches. The procedure takes approximately two minutes and requires no specialist watchmaking tools. Ensure that replacement spring bars have the correct diameter and length for the 22mm lugs of this reference.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 CB042012.A739.745P?

Yes, the aftermarket offers a wide selection of compatible 22mm straps for the Breitling Chronomat B01 44. Milano Straps produces handcrafted straps in alligator, calf leather and other fine materials, finished to a standard befitting the timepiece. It is essential to select straps with standard 22mm spring bars and a buckle or deployant of appropriate width (typically 18–20mm on the closing side).

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

The lifespan of a leather strap depends on the material, tanning quality and conditions of use. A high-grade vegetable-tanned alligator strap, used with care and rotated regularly with other straps, can last between three and five years while retaining an attractive patina. Prolonged contact with perspiration and water accelerates deterioration: leather straps should be avoided during intense physical activity. Milano Straps provides an 18-month guarantee 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