Breitling · Chronomat B01 42

Strap for Chronomat B01 42 Stainless Steel / Red Gold / Anthracite / 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 diameter42 mm
ReferenceUB0134101B1S1
FamilyChronomat B01 42
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2024
CaseRed Gold, Stainless 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 UB0134101B1S1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 42 UB0134101B1S1, seen from the bench

The Breitling Chronomat B01 42 UB0134101B1S1 is a refined evolution of the original 1980s chronograph, famous as the watch of the Frecce Tricolori aerobatic team. This stainless steel and red gold version combines sophisticated color tension with the Breitling B01 manufacture movement—featuring a column wheel for superior chronograph control. The 42mm case diameter ensures optimal legibility without excessive size, while the 22mm lug width accommodates a wide selection of aftermarket straps. COSC certified, the movement guarantees precision within +6/-4 seconds daily under standard conditions.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 42 UB0134101B1S1?

The Breitling Chronomat B01 42 UB0134101B1S1 has a lug width of 22 mm. This measurement refers to the internal distance between the two lugs of the case, best taken with a digital calliper positioned at the narrowest point of the lug gap. Any 22 mm strap with a straight end will be compatible.

What is the best strap for the Breitling Chronomat B01 42 UB0134101B1S1 in red gold and steel?

For the red gold and steel version of the Chronomat B01 42, an alligator leather strap in cognac or tobacco is the most harmonious choice: the warm chromatic tones complement the red gold case without visual conflict. Alternatively, a black box-grain calf or a burgundy shell cordovan neatly balance the steel component with refined restraint.

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

The strap on the Chronomat B01 42 is secured by standard springbars seated within the lugs. Using a fine-tipped springbar tool, compress the bar laterally to release the strap without scratching the case. It is advisable to work on a soft surface and to replace springbars showing signs of wear to prevent accidental drops.

Are there aftermarket straps compatible with the Breitling Chronomat B01 42 UB0134101B1S1?

Yes, the aftermarket offers a wide selection of compatible 22 mm straps. Milano Straps produces handcrafted straps in vegetable-tanned Tuscan leather, alligator, calf, and technical materials, made with end profiles suited to Breitling lugs. Always verify that the strap length and end profile fit the case correctly before purchasing.

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

The lifespan of a leather strap depends on leather quality, frequency of wear, and exposure to perspiration and moisture. A quality vegetable-tanned Tuscan leather strap, properly cared for — avoiding immersion and occasionally treating with a neutral conditioner — can last between 2 and 5 years. Milano Straps handcrafted straps carry an 18-month warranty 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