Breitling · Chronomat B01 44

Strap for Chronomat 44 Blacksteel / Black / Military

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

Lug width22 mm
Case diameter44 mm
ReferenceMB0111C3.BE35.253S
FamilyChronomat B01 44
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2016
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 44 MB0111C3.BE35.253S

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 MB0111C3.BE35.253S, seen from the bench

The Breitling Chronomat B01 44 MB0111C3.BE35.253S is a professional chronograph born in 1984 for Italian aerobatic patrol teams. It features a 44mm stainless steel AISI 316L case with unidirectional bezel and four rider tabs, paired with a blue dial and steel bracelet. The in-house B01 automatic movement with column wheel delivers 70 hours of power reserve and COSC chronometer certification. Lug width is 22mm, compatible with various leather or rubber straps without aesthetic compromise.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 MB0111C3.BE35.253S?

The lug width of the Breitling Chronomat B01 44 MB0111C3.BE35.253S is 22mm. This measurement should be taken using a digital calliper inserted between the lugs at the narrowest point, flush with the case. Respecting this dimension is essential to ensure a correct fit with no lateral play.

What is the best strap for the Breitling Chronomat B01 44 MB0111C3.BE35.253S?

The most suitable materials for the Chronomat B01 44 are Hornback alligator leather, shell cordovan and vulcanised rubber. Alligator enhances the sporting-elegant character of the case; cordovan develops a distinctive patina over time; rubber is the technical choice for humid conditions or active use. In all cases, the strap width must be 22mm.

How do you change the strap on a Breitling Chronomat B01 44?

Strap replacement requires a fine-tipped springbar tool. Insert the tip into the springbar slot between the lug and the strap, compress the bar and slide the strap free. Repeat on both sides. Fit the new 22mm strap by ensuring both springbars seat correctly in their respective lug holes. Work on a soft surface to avoid scratching the case.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 MB0111C3.BE35.253S?

Yes. Any strap with a 22mm lug width is technically compatible. Milano Straps crafts bespoke straps in leather, cordovan, alligator and rubber specifically for watches of this specification. The Chronomat's lug geometry is standard, so no adapters or modifications are required.

How long does a leather strap last on a chronograph such as the Chronomat B01 44?

Longevity depends on leather type and conditions of use. A quality vegetable-tanned strap, kept away from excessive moisture and perspiration, typically lasts two to four years with regular wear. Shell cordovan, owing to its dense fibre structure, tends to outlast most other leathers whilst developing a characteristic patina. 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.

Request an appointment →

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