Milano Straps
← Breitling

ITENDEFRES

SearchCart
Menu

Breitling · Chronomat B01 42

Strap for Chronomat B01 42 Stainless Steel / Black MOP / Japan

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

Lug width

22mm
22 mm strapsAll Breitling
Lug width22 mm
Case diameter42 mm
ReferenceAB0134101B3S1
FamilyChronomat B01 42
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2024
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

View →

Straps for the Chronomat B01 42 AB0134101B3S1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 42 AB0134101B3S1, seen from the bench

The Breitling Chronomat B01 42 AB0134101B3S1 is a sports chronograph with a 42mm stainless steel case and black ceramic bezel, featuring the in-house Caliber B01 movement with 70 hours of power reserve and COSC chronometer certification. The watch includes iconic rider tabs on the bidirectional bezel for functional operation with flight gloves, a black dial with subdials at 3, 6, and 9 o'clock, and a 22mm lug width compatible only with straps of that exact specification at the attachment point.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 42 AB0134101B3S1?

The lug width of the Breitling Chronomat B01 42 AB0134101B3S1 is 22mm. This measurement is taken internally between the two lugs at the point of contact with the strap. It is the critical parameter to observe when selecting a replacement strap to ensure correct fitting and a clean aesthetic finish. The strap typically tapers to 20mm at the buckle end for a refined profile.

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

The ideal choice depends on the intended use. For formal or business contexts, a 22mm vegetable-tanned alligator strap in black or tobacco brown complements the B01 calibre's technical character without undermining the watch's sporting nature. For intensive daily or outdoor use, vulcanised rubber or a technical nylon NATO strap are more practical options. Shell cordovan is the connoisseur's choice for developing a unique patina over time.

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

Strap replacement requires a springbar tool with a fine tip. Insert the tip into the slot on the side of the lug, compress the springbar inward and slide the strap free. Take care to avoid scratching the case surfaces — covering the lug area with soft masking tape is recommended. The original Breitling 22mm springbars can be reused if they remain in good condition.

Are there aftermarket straps compatible with the Chronomat B01 42 AB0134101B3S1?

Yes, any strap with a 22mm attachment width is technically compatible with the Breitling Chronomat B01 42 AB0134101B3S1. Milano Straps offers a curated range of handcrafted 22mm straps in alligator, calf, shell cordovan, NATO and rubber, available bespoke or ready to purchase online. It is advisable to select a strap that tapers to 20mm at the keeper for the best fit and visual balance.

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

The lifespan of a leather strap depends on the quality of the hide, daily care and wearing conditions. A high-quality alligator or shell cordovan strap produced using vegetable tanning, kept away from excessive moisture and perspiration and periodically conditioned with a suitable leather conditioner, can last between three and six years while retaining a well-groomed appearance. 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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only