Breitling · Chronomat B01 42

Strap for Chronomat B01 42 NFL Detroit Lions

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

Lug width22 mm
Case diameter42 mm
ReferenceAB01342B1CCS1
FamilyChronomat B01 42
MovementBreitling caliber 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 42 AB01342B1CCS1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 42 AB01342B1CCS1, seen from the bench

The Chronomat B01 42 is powered by the in-house Breitling B01 caliber, an automatic movement with column-wheel chronograph and chronometer certification. The 42mm case features 22mm lugs and offers hour, minute, small second, date and chronograph functions. The B01 caliber represents Breitling's high-end chronograph production.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 42 AB01342B1CCS1?

The Breitling Chronomat B01 42 AB01342B1CCS1 has a lug width of 22mm. This measurement is taken with a calliper between the two lugs of the case, at the point of contact with the strap. Any 22mm strap is compatible with this reference.

What is the best strap for the Breitling Chronomat B01 42?

The ideal choice depends on the intended use. For formal occasions, a 22mm polished alligator belly strap enhances the Chronomat's dual sporting and elegant character. For everyday wear, a vegetable-tanned calf leather strap develops an authentic patina over time. For active use, vulcanised rubber ensures water resistance and comfort. A NATO nylon strap remains the most historically coherent option, in keeping with the watch's aviation heritage.

How do I change the strap on a Breitling Chronomat B01 42?

The strap is removed using a fine-tipped springbar tool, applying gentle pressure to the spring bar housed between the case lugs. It is advisable to work on a soft surface to avoid scratching the case. The original Breitling spring bars are standard gauge and compatible with most 22mm aftermarket straps.

Are there aftermarket straps compatible with the Breitling Chronomat B01 42 AB01342B1CCS1?

Yes. Any strap measuring 22mm in lug width with standard spring bars is technically compatible with the Chronomat B01 42. Milano Straps offers a curated selection of handcrafted 22mm straps in alligator, calf leather, NATO nylon and rubber, available either as bespoke commissions or ready to purchase online.

How long does a leather strap last on a Breitling Chronomat B01 42?

The lifespan of a leather strap depends on the material, frequency of use and exposure to perspiration and moisture. A quality vegetable-tanned calf leather strap typically lasts 2 to 4 years with daily wear. An alligator strap, thanks to the dense fibre structure of the hide, can last 5 to 8 years with proper care and rotation with other straps. Milano Straps products carry 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