Breitling · Chronomat B01 44

Strap for Chronomat 44 Stainless Steel / Gray Pearl Diamond / Rubber

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
ReferenceAB011012.G686.145S
FamilyChronomat B01 44
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2011
CaseStainless 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 AB011012.G686.145S

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 AB011012.G686.145S, seen from the bench

The Breitling Chronomat B01 44 AB011012.G686.145S is a 44mm stainless steel aviation chronograph born in 1984 with the Frecce Tricolori. It houses the Breitling B01 in-house manufacture movement, an automatic chronograph with column wheel and vertical clutch, COSC-certified chronometer with approximately 70 hours power reserve. The 44mm case features satin and polished steel, screw-down crown, and rotatable bezel. The lug width is 22mm.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 AB011012.G686.145S?

The Breitling Chronomat B01 44 AB011012.G686.145S has a lug width of 22mm. This measurement is taken between the two lugs at the innermost point using a digital calliper or precision ruler. Any strap with a 22mm attachment width is compatible with this reference.

What is the best strap for the Breitling Chronomat B01 44?

For the Chronomat B01 44, a vegetable-tanned calf leather strap is recommended for formal daily wear, whilst a vulcanised rubber strap suits sporting contexts. Alligator with a rounded grain is ideal for formal occasions. A ballistic nylon NATO strap recalls the original instrumental vocation of the model. The correct attachment width is 22mm, with possible tapering to 20mm towards the buckle.

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

To replace the strap on the Chronomat B01 44, a spring bar tool or dedicated watch lever screwdriver is required. The Chronomat's lugs house standard 22mm spring bars: insert the tip of the tool into the dedicated slot on the side of the lug, compress the spring bar and slide the strap free. Care should be taken to avoid scratching the stainless steel case. A watch cushion and a tool with a soft-tipped end are strongly recommended.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 AB011012.G686.145S?

Yes, the Breitling Chronomat B01 44 AB011012.G686.145S uses standard 22mm spring bars, making it compatible with any aftermarket strap with a 22mm attachment width. Milano Straps produces Italian handcrafted straps specifically selected for this model, available in leather, alligator, calf, rubber and NATO. Aftermarket options allow full aesthetic personalisation whilst maintaining the same constructional quality.

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

The lifespan of a leather strap depends on the type of hide, frequency of use and maintenance. A quality vegetable-tanned calf strap worn regularly typically lasts between 18 and 36 months before showing significant wear at the holes. Alligator, due to its compact fibrous structure, tends to last considerably longer. Milano Straps offers an 18-month warranty against manufacturing defects. To extend strap life, avoid prolonged exposure to heavy rain and alternate between two straps.

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