Breitling · Chronomat B01 44

Strap for Chronomat 44 Rose Gold / Diamond / Pearl Diamond / 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
ReferenceHB011059.A698.731P
FamilyChronomat B01 44
MovementBreitling caliber Caliber B01 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Chronometer
CaseRose Gold

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 HB011059.A698.731P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 HB011059.A698.731P, seen from the bench

The Chronomat B01 44 is powered by the Breitling B01 manufacture caliber with column-wheel chronograph function and chronometer certification. The watch features a 44mm case with 22mm lugs and displays hours, minutes, small seconds, and date. The automatic movement integrates the chronograph complications with a column-wheel architecture for precise pushpiece operation.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 HB011059.A698.731P?

The lug width of the Breitling Chronomat B01 44 reference HB011059.A698.731P is 22 mm. This measurement is standard across the entire Chronomat B01 44 mm family and determines aftermarket strap compatibility. To verify it, measure the internal distance between the two lugs using a digital calliper placed at the base of the lugs themselves.

What is the best strap for the Breitling Chronomat B01 44 HB011059.A698.731P in rose gold?

For an 18-carat rose gold case such as that of the Chronomat B01 44 HB011059.A698.731P, a vegetable-tanned alligator strap in bordeaux, cognac or dark chocolate offers the best balance between elegance and chromatic coherence. Alternatively, an aged calf leather strap develops a warm patina over time that harmonises naturally with rose gold. For sporting use, vulcanised rubber with a fine ribbed texture is the most functional choice without compromising aesthetics.

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

To replace the strap on the Breitling Chronomat B01 44, a springbar tool with a hooked lever tip is required to compress the spring bars housed within the lugs. Insert the tip into the lug slot, press inward to release the bar, and slide the strap free. Care should be taken to avoid scratching the rose gold surface: felt pads or masking tape placed over the lugs during the procedure are strongly recommended.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 HB011059.A698.731P?

Yes. The Breitling Chronomat B01 44 HB011059.A698.731P features standard 22 mm lugs compatible with most aftermarket straps with straight or slightly curved ends. Milano Straps offers a curated selection of handcrafted 22 mm straps in alligator, calf leather, NATO and rubber, available with ardillon buckles or deployant clasps in various metal finishes, including rose gold PVD for an optimal colour match.

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

The lifespan of a leather strap depends primarily on hide quality, tanning method and conditions of use. A vegetable-tanned alligator strap of high quality, rotated with other straps and kept away from prolonged contact with water and perspiration, can last between three and seven years while retaining structural integrity and a well-kept appearance. Chrome-tanned straps tend to deteriorate more rapidly. Using a deployant clasp reduces mechanical stress on the leather, thereby extending its useful 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