Breitling · Navitimer

Strap for Navitimer B01 Chronograph 43 Stainless Steel / Ethos

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter43 mm
ReferenceAB01388B1C1A1
FamilyNavitimer
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
Year2025
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 Navitimer AB01388B1C1A1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Navitimer AB01388B1C1A1, seen from the bench

The Navitimer is one of Breitling's benchmark chronographs, introduced in the 1950s for civil aviation. It houses the automatic B01 caliber with column-wheel chronograph function and chronometer certification. The lugs measure 22mm in width.

Frequently asked questions

What is the lug width of the Breitling Navitimer AB01388B1C1A1?

The lug width of the Breitling Navitimer AB01388B1C1A1 is 22mm. This measurement has remained consistent across the entire 43mm Navitimer family, allowing direct strap replacement with any 22mm-width strap without adapters.

What is the best strap for the Breitling Navitimer AB01388B1C1A1?

The most suitable straps for the Navitimer AB01388B1C1A1 are vegetable-tanned calfskin and Hornback or Caiman alligator for formal wear, vulcanised rubber for sporting contexts, and nylon NATO for a faithful aviation aesthetic. The correct lug width is 22mm. A steel deployant clasp is recommended to maintain visual symmetry with the case.

How do you change the strap on the Breitling Navitimer AB01388B1C1A1?

To replace the strap on the Navitimer AB01388B1C1A1, a springbar tool is required to remove the spring bars securing the strap to the lugs. The operation is non-invasive and reversible, and can be carried out independently or by a watchmaker. The strap width to use is 22mm.

Are there aftermarket straps compatible with the Breitling Navitimer AB01388B1C1A1?

Yes, all standard 22mm straps with spring bars are compatible with the Navitimer AB01388B1C1A1. On milanostraps.it you will find a curated selection of Italian handcrafted straps in various leathers and materials, specifically listed for this lug width.

How long does a leather strap last on the Breitling Navitimer AB01388B1C1A1?

The lifespan of a leather strap depends on tanning quality and daily use. A high-quality vegetable-tanned calfskin strap, properly maintained — kept away from prolonged moisture and conditioned periodically — can last between 2 and 5 years. Casati Milano straps carry an 18-month warranty 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