Breitling · Chronomat B01 44

Strap for Chronomat 44 GMT Stainless Steel / Blackeye Blue / Bracelet

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
ReferenceAB042011.C852.375A
FamilyChronomat B01 44
MovementBreitling caliber B04 hours, minutes, small seconds, Additional 24 hours Hand (adjustable) | date | Chronograph, column wheel | chronometer
Year2012
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 AB042011.C852.375A

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat B01 44 AB042011.C852.375A, seen from the bench

The Breitling Chronomat B01 44 features the B04 automatic caliber with column-wheel chronograph function and chronometer certification. The movement has an adjustable 24-hour hand, small seconds and date indication. The case has 22mm lugs.

Frequently asked questions

What is the lug width of the Breitling Chronomat B01 44 AB042011.C852.375A?

The lug width of the Breitling Chronomat B01 44 AB042011.C852.375A is 22mm, measured internally between the two lugs at the strap attachment point. It is advisable to verify this with a digital calliper before purchasing an aftermarket strap to ensure a precise fit.

What is the best strap for the Breitling Chronomat B01 44?

The most suitable materials for the Chronomat B01 44 are Louisiana alligator leather for formal occasions, vegetable-tanned Tuscan calf leather for everyday wear, and vulcanised rubber for sport or marine environments. A brushed steel deployant clasp is recommended over a traditional pin buckle to reduce stress on the strap's lateral stitching over time.

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

To replace the strap on the Chronomat B01 44, you will need a fine-tipped springbar tool. The Breitling lugs on this model feature a slight curve at the base, so it is important to use 22mm springbars of the appropriate length for the case width. Work on a soft surface to protect the dial and proceed carefully to avoid scratching the steel lugs.

Are there aftermarket straps compatible with the Breitling Chronomat B01 44 AB042011.C852.375A?

Yes, there are numerous aftermarket straps in 22mm compatible with the Chronomat B01 44. MilanoStraps offers a curated selection of handcrafted straps in leather, alligator, calf, and technical materials, made to measure for 22mm lugs with shaped ends designed to fit the specific geometry of Breitling lugs.

How long does a leather strap last on a Breitling Chronomat B01 44?

The lifespan of a leather strap depends on the quality of the hide, frequency of use, and exposure to perspiration and moisture. A high-quality vegetable-tanned calf strap typically lasts between 18 and 36 months with regular wear. Alligator leather, owing to its denser scale structure, tends to last longer when maintained with neutral, non-aggressive conditioning products. MilanoStraps offers an 18-month manufacturing defect guarantee on all straps.

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