Breitling · Endurance Pro

Strap for Endurance Pro Hiroshima Toyo Carp Carp / Boy's Limited

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
ReferenceX823101E1B1S1
FamilyEndurance Pro
MovementBreitling caliber 82 Foudroyante seconds, minutes, small seconds | date | Chronograph | chronometer
Year2023
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 X823101E1B1S1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Endurance Pro X823101E1B1S1, seen from the bench

The Breitling Endurance Pro X823101E1B1S1 is a sports chronograph developed with elite triathletes and Ironman ambassadors. The case is made of Titaplast, a glass-fiber-reinforced polymer that weighs approximately 62 grams including the strap. It features a 44 mm diameter case, a stainless steel bezel, and a high-visibility fluorescent dial. The movement is the Breitling Caliber 82, a COSC-certified quartz chronometer with foudroyante seconds, chronograph, small seconds, and date. The lug width is 22 mm, compatible with various strap materials. Water resistance reaches 100 meters.

Frequently asked questions

What is the lug width of the Breitling Endurance Pro X823101E1B1S1?

The lug width of the Breitling Endurance Pro X823101E1B1S1 is 22mm. This measurement should be taken directly between the two lugs using a digital calliper, rather than relying on the original strap, which may have deformed over time. Any aftermarket strap should conform to this dimension within a tolerance of ±0.3mm to ensure a proper, play-free fit.

What is the best strap for the Breitling Endurance Pro X823101E1B1S1?

The ideal choice depends on the intended use. For sport or outdoor activities, a 22mm NATO strap in technical nylon or vulcanised rubber offers comfort and moisture resistance. For urban or semi-formal wear, a vegetable-tanned calf leather strap with a matte finish complements the Titaplast surfaces of the case effectively. Shell cordovan represents the most sophisticated option for those seeking a visually coherent pairing with the case's technical polymer aesthetic.

How do you change the strap on a Breitling Endurance Pro X823101E1B1S1?

Strap replacement is carried out via the standard 22mm spring bars located between the case lugs. Using a flat-headed spring bar tool or a suitable lever, compress the spring bar to release it from one side and slide it out. The operation requires no case back removal or specialised tools. It is advisable to work on a soft surface to avoid scratching the Titaplast case.

Are there aftermarket straps compatible with the Breitling Endurance Pro X823101E1B1S1?

Yes. The Breitling Endurance Pro X823101E1B1S1 features standard 22mm lugs, a size widely supported by quality aftermarket manufacturers. Milano Straps offers a selection of handcrafted 22mm straps in leather, nylon and rubber, made from premium materials and fully compatible with this case. Replacement does not require the intervention of an authorised service centre.

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

The lifespan of a leather strap depends primarily on exposure to perspiration, water and UV radiation. On a sports-oriented watch such as the Endurance Pro, a quality calf leather strap can last between 18 and 36 months with standard care, provided prolonged contact with water is avoided. Shell cordovan and alligator straps, owing to the density of their fibres, generally offer superior longevity. For intensive use, it is advisable to rotate between multiple straps and to opt for rubber or nylon during training sessions.

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