Breitling · Chronomat Evolution

Strap for Chronomat Evolution Stainless Steel / Yellow Gold / Black - Roman

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
ReferenceC1335611/B821
FamilyChronomat Evolution
MovementBreitling caliber Caliber 13 Hours, Minutes, Small Seconds | Date | Chronograph
CaseYellow 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 Evolution C1335611/B821

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Chronomat Evolution C1335611/B821, seen from the bench

The Chronomat Evolution C1335611/B821 is a 43.70 mm stainless steel and 18 carats yellow gold chronograph born from the original 1984 Chronomat, developed with the Frecce Tricolori aerobatic team. It features a yellow gold bezel with distinctive rider tabs at 12, 3, 6, and 9 o'clock positions for operation with pilot gloves, and an asymmetrical lug design with a 22 mm lug width. The watch is powered by a COSC-certified automatic Breitling 13 caliber movement with hours, minutes, small seconds, date, and chronograph functions, beating at 28,800 vph. Water resistance is rated to 200 meters with a screw-down crown and caseback.

Frequently asked questions

What is the lug width of the Breitling Chronomat Evolution C1335611/B821?

The Breitling Chronomat Evolution C1335611/B821 features a lug width of 22mm. This measurement is a direct proportional result of the 43.70mm case diameter and is consistent across the entire Chronomat Evolution range. It can be confirmed by measuring the inner distance between the lugs at the strap attachment point with a digital calliper.

What is the best strap for the Breitling Chronomat Evolution C1335611/B821?

Given the bi-metal steel and yellow gold combination, the most appropriate materials are alligator leather in warm tones (cognac, tobacco, honey) or shell cordovan, both of which complement the gold bezel. For sportier use, vulcanised rubber paired with a steel or gold PVD deployant clasp is the most functional choice. All 22mm-width straps are compatible with this reference.

How do you change the strap on a Breitling Chronomat Evolution C1335611/B821?

Strap replacement requires a spring bar tool to remove the spring bars securing the bracelet to the asymmetric lugs of the case. It is advisable to work on a soft surface to avoid scratching the steel and yellow gold case. If in doubt, the operation can be carried out by a watchmaker or at the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling Chronomat Evolution C1335611/B821?

Yes. Any strap with a 22mm lug width is compatible with the C1335611/B821. Milano Straps offers a curated selection of handcrafted straps in alligator, calf, shell cordovan, rubber and NATO in the 22mm size, available online or made to measure at the Casati Milano atelier.

How long does a leather strap last on a Breitling Chronomat Evolution?

The lifespan of a leather strap depends on the quality of the tanning process, frequency of use, and exposure to perspiration and environmental conditions. A high-grade alligator or shell cordovan strap, properly maintained, can last between 3 and 7 years. Vegetable-tanned straps develop a patina over time that enhances their aesthetic value. Milano Straps guarantees its straps for 18 months 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