Breitling · Chronomat B01 44

Strap for Chronomat 44 Rose Gold / Pearl Roman / 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
ReferenceHB011012.A693.731P
FamilyChronomat B01 44
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2009
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 HB011012.A693.731P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 HB011012.A693.731P, seen from the bench

The Chronomat B01 44 is powered by the in-house caliber B01 with column-wheel chronograph function and chronometer certification. The movement offers indication of hours, minutes, small seconds, and date. The case features 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 HB011012.A693.731P?

The Breitling Chronomat B01 44 HB011012.A693.731P features a 22mm lug width. This is the standard measurement used across the entire Chronomat 44 line and can be confirmed with a calliper by measuring the internal distance between the two lugs at the point where the strap attaches to the case.

What is the best strap for the Breitling Chronomat B01 44 in rose gold?

For an 18-carat rose gold case, an alligator strap in vegetable-tanned leather is the most coherent choice: the geometric belly grain interacts naturally with the reflections of the precious metal. Alternatively, smooth vegetable-tanned calf leather or shell cordovan offer a more restrained yet equally refined patina. A rose gold or PVD gold deployant clasp completes the pairing with full metallic symmetry.

How do you change the strap on the Breitling Chronomat B01 44 HB011012.A693.731P?

The strap is replaced using standard 22mm spring bars, removed with a dedicated springbar tool or a fine-tipped lever. It is advisable to work on a soft watchmaker's pad to protect the rose gold surfaces. Should you have any doubts, Casati Milano offers a strap fitting service at the atelier by appointment.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44?

Yes. Any strap with a 22mm attachment and standard spring bars is compatible with the Breitling Chronomat B01 44 HB011012.A693.731P. Milano Straps offers a curated selection of handcrafted leather, NATO and rubber straps specifically suited to this lug width, available online in the 22mm section.

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

Longevity depends on the material and usage. A quality vegetable-tanned alligator strap, properly cared for — avoiding excessive moisture and perspiration, and treated with appropriate leather conditioner — can last between three and five years while retaining its structure and appearance. Smooth calf leather develops a distinctive patina over time, whilst shell cordovan, thanks to the density of its fibres, is among the most durable options available. Casati Milano offers 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