Breitling · Chronomat B01 44

Strap for Chronomat 44 Stainless Steel / Rose Gold / Diamond / Antarctica White / 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
ReferenceCB0110AA.A696.731P
FamilyChronomat B01 44
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2009
CaseRose Gold, Stainless 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 CB0110AA.A696.731P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 CB0110AA.A696.731P, seen from the bench

The Chronomat B01 44 (ref. CB0110AA.A696.731P) is a stainless steel and rose gold chronograph with copper dial, launched in 1984 as a professional instrument watch for pilots and racers. It features the Breitling B01 in-house movement, COSC-certified with column wheel and vertical coupling, offering over 70 hours power reserve at 28,800 vph. The 44mm two-tone case includes rose gold 18K on bezel and lugs, water-resistant to 200m, with a screw-down case back and three-counter chronograph dial. The lug width is 22mm.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 CB0110AA.A696.731P?

The lug width of the Breitling Chronomat B01 44 CB0110AA.A696.731P is 22mm. This measurement is taken between the two lugs at the point closest to the case, using a digital calliper for accuracy. The compatible buckle or deployant clasp is generally 20mm wide.

What is the best strap for the Breitling Chronomat B01 44 CB0110AA.A696.731P?

For the two-tone steel and rose gold case of the Chronomat B01 44, the most effective choices are vegetable-tanned calf leather in mid-tobacco brown tones, which complement the rose gold, or a domed alligator strap with a glossy finish for a more characterful pairing. For active sports use, vulcanised rubber is the most functional option whilst preserving the model's aeronautical spirit.

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

The Chronomat B01 44 uses a standard 22mm spring bar attachment system. Using a spring bar tool, the spring bars can be removed and the strap replaced without specialist equipment. It is recommended to work on a soft surface to avoid scratching the steel and rose gold case. If in doubt, any qualified watchmaker can carry out the operation within minutes.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 CB0110AA.A696.731P?

Yes, any strap with a 22mm lug width and a 20mm taper is technically compatible with the Chronomat B01 44. Milano Straps offers a selection of handcrafted straps in leather, alligator, calf and rubber, specifically designed for 44mm watches with 22mm lugs, made from high-quality materials and available in numerous colours and finishes.

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

The lifespan of a leather strap depends on the material and usage. A quality vegetable-tanned calf leather strap, properly cared for — avoiding prolonged exposure to water and excessive perspiration, and occasionally applying a leather conditioner — can last between 2 and 5 years with daily wear. Quality alligator leather, with its denser fibre structure, tends to last longer. Milano Straps handcrafted straps carry an 18-month warranty 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