Breitling · Chronomat B01 41

Strap for Chronomat 41

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter41 mm
ReferenceAB014012BA52428X
FamilyChronomat B01 41
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
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 41 AB014012BA52428X

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 41 AB014012BA52428X, seen from the bench

The Breitling Chronomat B01 41 is a professional chronograph born in 1984 for military aviation in collaboration with the Italian aerobatic team. The reference AB014012BA52428X features a 41mm stainless steel case with full chronograph dial and iconic rider tabs on the rotating bezel for pilot calculations. It is powered by the in-house developed B01 caliber, a column wheel chronograph movement certified COSC with precision of -4 to +6 seconds per day. The lug width is 22mm, straight design, compatible with standard aftermarket straps.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 41 AB014012BA52428X?

The lug width of the Breitling Chronomat B01 41 (ref. AB014012BA52428X) is 22mm. This measurement is taken with a digital calliper at the inner point between the two lugs where the strap inserts. It is a standard size that ensures broad compatibility with quality aftermarket straps.

What is the best strap for the Breitling Chronomat B01 41?

The most suitable materials for the Chronomat B01 41 are: crocodile alligator with a crossed grain pattern for formal or business settings, vegetable-tanned calf leather for everyday casual use, vulcanised rubber for sport or outdoor activities, and ballistic nylon NATO to reference the model's aeronautical heritage. The choice depends on intended use and the dial fitted.

How do I change the strap on a Breitling Chronomat B01 41?

To replace the strap on the Chronomat B01 41 you will need a fine-tipped spring bar tool. Insert the tip between the lug and the strap, compress the spring bar and slide the strap out. Care should be taken to avoid scratching the steel lugs. Alternatively, Casati Milano offers professional fitting at the atelier by appointment.

Are there aftermarket straps compatible with the Breitling Chronomat B01 41 AB014012BA52428X?

Yes. The Chronomat B01 41 features straight 22mm lugs, a width broadly supported by aftermarket strap makers. Milano Straps offers a selection of 22mm straps in alligator, calf leather and other materials, handcrafted by Casati Milano and fully compatible with this reference without requiring any adapters.

How long does a leather strap last on a Breitling Chronomat B01 41?

The lifespan of a leather strap depends on material, usage and maintenance. A quality handcrafted alligator or vegetable-tanned calf leather strap, worn daily with proper care (avoiding prolonged exposure to water and perspiration, conditioning the leather regularly), can last between 2 and 5 years. Casati Milano provides 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