Breitling · Endurance Pro

Strap for Endurance Pro Ironman 70.3 World Championship

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
ReferenceX823101A1M1S1
FamilyEndurance Pro
MovementBreitling caliber Caliber 82 Foudroyante Seconds, Minutes, Small Seconds | Date | Chronograph | Chronometer
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 X823101A1M1S1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Endurance Pro X823101A1M1S1, seen from the bench

The Endurance Pro is powered by the Breitling 82 caliber with chronograph, small seconds and date functions. The movement is chronometer certified and features a foudroyante second hand indication. The case has 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Breitling Endurance Pro X823101A1M1S1?

The lug width of the Breitling Endurance Pro X823101A1M1S1 is 22mm. This measurement is standard across the entire 44mm Endurance Pro range and can be verified using a digital calliper to measure the internal distance between the two lugs at their attachment point to the case.

What is the best strap for the Breitling Endurance Pro X823101A1M1S1?

For athletic use, a technical nylon NATO or vulcanised rubber strap is the most fitting choice given the model's sporting purpose. For everyday or semi-formal wear, vegetable-tanned calf leather or alligator paired with a deployant clasp creates a compelling contrast with the Titaplast case. All straps must have a 22mm attachment width.

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

The strap is removed using a flat-tipped springbar tool to compress the spring bars housed within the lugs. It is advisable to work on a soft surface to avoid scratching the Titaplast case. The operation requires no professional tools but should be carried out carefully to avoid damaging the composite lug structure.

Are there aftermarket straps compatible with the Breitling Endurance Pro X823101A1M1S1?

Yes, any strap with a 22mm attachment width is compatible with the Breitling Endurance Pro X823101A1M1S1. Milano Straps produces handcrafted leather, NATO and rubber straps specifically in 22mm width, available in various lengths and buckle options. No adapters or modifications to the original lugs are required.

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

The lifespan of a leather strap depends on exposure to perspiration, water and UV light. On a sport watch such as the Endurance Pro, a quality calf leather strap with water-resistant treatment can last 18 to 36 months with regular maintenance. A well-conditioned alligator strap can exceed 3 to 5 years. For intensive athletic use, alternating with a NATO or rubber strap is recommended to extend the leather strap's service life.

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