Breitling · Navitimer

Strap for Cosmonaute Stainless Steel / Black / Croco

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
ReferenceAB0210B4.BC36.743P
FamilyNavitimer
MovementBreitling caliber B02 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
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 AB0210B4.BC36.743P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Navitimer AB0210B4.BC36.743P, seen from the bench

The Navitimer represents one of Breitling's historic models, introduced in the 1950s as an aviation instrument. It features the automatic Caliber B02 with a column-wheel chronograph function and a chronometer certification. The lugs measure 22mm in width.

Frequently asked questions

What is the lug width of the Breitling Navitimer AB0210B4.BC36.743P?

The lug width of the Breitling Navitimer AB0210B4.BC36.743P is 22mm. This measurement should be taken with a digital calliper between the inner faces of the lugs, flush against the case. It is essential to select a strap with curved ends to accommodate the downward-angled lug geometry characteristic of the Navitimer case.

What is the best strap for the Breitling Navitimer AB0210B4.BC36.743P?

The ideal strap for the Navitimer AB0210B4.BC36.743P depends on context. Square-scale alligator in midnight blue or dark brown offers the highest level of formality. Vegetable-tanned calfskin in cognac develops a distinctive patina over time and suits daily wear. Ballistic nylon NATO is the most practical sporting option, whilst FKM rubber performs best in humid or high-activity environments.

How do I change the strap on the Breitling Navitimer AB0210B4.BC36.743P?

To replace the strap on the Navitimer AB0210B4.BC36.743P, a double-tip springbar tool is required. The Navitimer features drilled lugs, which allow the tool tip to be inserted into the side hole to compress the springbar directly. The operation can be completed in under two minutes without risk of scratching the case, provided the correct tool is used.

Are there aftermarket straps compatible with the Breitling Navitimer AB0210B4.BC36.743P?

Yes, a wide range of aftermarket straps is compatible with the Navitimer AB0210B4.BC36.743P at 22mm lug width. It is critical to specify curved ends when ordering, to ensure a flush fit against the case's angled lugs. Milanostraps.it offers a curated selection of handcrafted leather, NATO and rubber straps in 22mm, all compatible with this reference.

How long does a leather strap last on the Breitling Navitimer AB0210B4.BC36.743P?

The lifespan of a leather strap on the Navitimer AB0210B4.BC36.743P depends on leather quality and conditions of use. A high-quality vegetable-tanned calfskin strap used daily but kept away from moisture and perspiration typically lasts between 18 and 36 months. A well-maintained alligator strap can last 3 to 5 years or more. Periodic conditioning with a neutral leather balm and avoiding heat sources will significantly extend the strap's working 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