Breitling · Chronomat B01 44

Strap for Chronomat 44 Rose Gold / Metallica Blue / 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.C790.731P
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.C790.731P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 HB011012.C790.731P, seen from the bench

The Chronomat B01 44 is equipped with the automatic Breitling B01 caliber with column-wheel chronograph function and chronometer certification. The movement offers hour, minute, small seconds, date and chronograph indications. The case features 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 HB011012.C790.731P?

The lug width of the Breitling Chronomat B01 44 HB011012.C790.731P is 22mm. This measurement is taken between the two lugs at the narrowest point of the strap attachment. It is the standard lug width used by Breitling across its 44mm sport range.

What is the best strap for the Breitling Chronomat B01 44 HB011012.C790.731P in rose gold?

For the rose gold version, the most suitable materials are alligator leather in belly or hornback grain in cognac, tobacco or midnight blue tones, and smooth vegetable-tanned calf leather. Vulcanised rubber is the ideal choice for intensive daily sport use, while a rose gold deployante clasp completes the pairing with maximum aesthetic coherence.

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

The strap is removed using a dedicated springbar tool or a flat-head lever tool, pressing against the spring bars housed in the lugs. The Chronomat's lugs are slightly convex and drilled: care should be taken to avoid scratching the rose gold case. If in doubt, the operation is best carried out by a watchmaker or in a specialist atelier.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 HB011012.C790.731P?

Yes. Any 22mm strap with a straight or slightly curved attachment is compatible. Milano Straps offers handcrafted 22mm straps made to measure, with tapered ends and optionally a rose gold buckle or deployante clasp to maintain visual coherence with the case. Leather quality and precision cutting are the key differentiators from standard production straps.

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

A quality leather strap in vegetable-tanned calf or alligator typically lasts between 2 and 4 years with regular daily wear. Longevity depends on exposure to perspiration, water and heat. A vegetable-tanned calf strap develops a patina over time that enhances its character, whilst alligator retains its structure longer due to the density of its fibres. Milano Straps 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