Breitling · Chronomat B01 42

Strap for Chronomat B01 42 NFL Jacksonville Jaguars

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
ReferenceAB01342B1L3S1
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 AB01342B1L3S1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 42 AB01342B1L3S1, seen from the bench

The Breitling Chronomat B01 42 NFL Jacksonville Jaguars features a 42mm stainless steel case with unidirectional bezel and houses the Breitling Caliber B01 manufacture movement, a column-wheel chronograph with 28,800 A/h balance frequency and 70-hour power reserve, certified as a chronometer. The dial displays hours, minutes, small seconds at 6 o'clock, date at 3 o'clock, and classic chronograph subdials. Water-resistant to 200 meters, the strap lug width is 22mm. Reference AB01342B1L3S1.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 42 AB01342B1L3S1?

The lug width of the Breitling Chronomat B01 42 AB01342B1L3S1 is 22mm. This measurement is standard across the entire Chronomat 42 family and is taken as the internal distance between the two lugs at the strap attachment point, best measured with a vernier calliper for accuracy.

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

The most suitable straps for the Chronomat B01 42 are: Mississippiensis alligator for formal occasions, vegetable-tanned Tuscan calf leather for daily wear (it develops a distinguished patina over time), ballistic nylon NATO for aeronautical heritage accuracy, or vulcanised rubber for intensive sporting use. A brushed steel deployant clasp is recommended for fine leather straps to distribute tension evenly.

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

The Chronomat B01 42 uses a standard 22mm spring bar lug attachment system. To replace the strap, use a dedicated springbar tool or thin-bladed lever: compress both ends of the spring bar to release it from the lugs, remove the old strap and fit the new one. The operation takes approximately two minutes and requires no specialist watchmaking skills.

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

Yes. Any standard 22mm spring bar strap is compatible with the Breitling Chronomat B01 42. Milano Straps offers handcrafted straps in Italian calf leather, alligator, shell cordovan and rubber, all produced with a 22mm attachment width tapered to 20mm or 18mm at the buckle, maintaining the correct aesthetic proportions of the case.

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

Strap longevity depends on leather quality and usage habits. A quality vegetable-tanned calf strap typically lasts 2–4 years with daily wear. Alligator or shell cordovan straps, being denser and more resilient materials, can exceed 5–7 years with proper care — regular conditioning cream and avoidance of prolonged moisture. Milano Straps 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