Breitling · Endurance Pro

Strap for Endurance Pro Ironman Red

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
ReferenceX823109A1K1S1
FamilyEndurance Pro
MovementBreitling caliber 82 Foudroyante seconds, minutes, small seconds | date | Chronograph | chronometer
Year2021
CaseTitaplast, 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 Endurance Pro X823109A1K1S1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Endurance Pro X823109A1K1S1, seen from the bench

The Endurance Pro is equipped with the Breitling Caliber 82 with chronograph functions, date and chronometer certification. The movement includes a foudroyante complication for the measurement of tenths of seconds. 22mm lug width for the strap.

Frequently asked questions

What is the lug width of the Breitling Endurance Pro X823109A1K1S1?

The Breitling Endurance Pro X823109A1K1S1 features a 22mm lug width. This measurement is standard for a 44mm case and ensures broad compatibility with aftermarket straps fitted with straight ends, requiring no adapters.

What is the best strap for the Breitling Endurance Pro X823109A1K1S1?

The ideal choice depends on context. For daily sport use, an FKM rubber or technical nylon NATO strap offers the most practical solution. For a smarter register, a vegetable-tanned calf leather strap with a matte finish or a dark alligatore leather pairs well with the Titaplast case's black mat surface.

How do you change the strap on the Breitling Endurance Pro?

Strap changes on the Endurance Pro require a fine-tipped springbar tool, ideally with a plastic head to avoid scratching the Titaplast case. The 22mm springbars are released by pressing the tip against the bar end inside the lug. The operation takes under two minutes and can be done independently, though first-timers may prefer to consult a watchmaker.

Are there aftermarket straps compatible with the Breitling Endurance Pro?

Yes. Any strap with a straight 22mm end and standard springbars is compatible with the Breitling Endurance Pro. The lug architecture presents no unusual geometric constraints. Milano Straps offers a curated selection of 22mm handcrafted straps in leather, alligator, NATO and rubber, all fully compatible.

How long does a leather strap last on a sport watch like the Endurance Pro?

Longevity depends on usage intensity and leather quality. A vegetable-tanned calf leather strap used in non-extreme conditions and treated with a conditioning cream every two to three months can last between two and four years. For intensive sport use or frequent water exposure, technical materials such as FKM or nylon are recommended, with leather reserved for smarter occasions.

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