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Breitling · Navitimer

Strap for Navitimer 01 43 Stainless Steel / Black Arabic / Croco

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

Lug width

22mm
22 mm strapsAll Breitling
Lug width22 mm
Case diameter43 mm
ReferenceAB012012.BB02.743P
FamilyNavitimer
MovementBreitling caliber B01 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

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Straps for the Navitimer AB012012.BB02.743P

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Navitimer AB012012.BB02.743P, seen from the bench

The Navitimer 01 43 is a stainless steel chronograph launched in 1952 in collaboration with the AOPA as a wrist computer for pilots. The reference AB012012.BB02.743P features a 43mm stainless steel case with black Arabic dial and crocodile leather strap. It is powered by the Breitling B01 caliber, an in-house developed automatic movement with column wheel chronograph architecture, 28,800 A/h oscillation frequency, and approximately 70-hour power reserve. The 22mm lug width is specific to this Navitimer generation and requires tapered straps with reduced upper thickness due to the pronounced downward curve of the lugs.

Frequently asked questions

What is the lug width of the Breitling Navitimer AB012012.BB02.743P?

The lug width of the Breitling Navitimer AB012012.BB02.743P is 22mm. This measurement should be taken with a digital calliper at the point where the spring bar inserts between the two lugs. The closing end typically tapers to 20mm, making a 22/20mm taper the standard proportion for this reference.

What is the best strap for the Breitling Navitimer AB012012.BB02.743P?

For the Navitimer AB012012.BB02.743P with its black dial and stainless steel case, the most suitable options are vegetable-tanned calfskin in cognac or tobacco tones, or matte alligator for a more formal result. Vulcanised rubber is ideal for sporting use, while a nylon NATO strap offers practicality and moisture resistance. A 22/20mm taper is the correct proportion for this model's lug geometry.

How do I change the strap on the Breitling Navitimer AB012012.BB02.743P?

To replace the strap on the Navitimer AB012012.BB02.743P, you will need a fine-tipped spring bar tool. The Navitimer's lugs have a pronounced downward curve, so position the tool carefully in the lateral slot of the lug, compress the spring bar and slide the strap out without scratching the case. The operation takes approximately two minutes for an experienced hand. If in doubt, entrust the task to a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling Navitimer AB012012.BB02.743P?

Yes. The Breitling Navitimer AB012012.BB02.743P features standard 22mm lugs with a removable spring bar, making it compatible with any aftermarket strap of 22mm width with a straight end. Milanostraps.it offers a curated selection of handcrafted straps in 22mm specifically compatible with this reference, available in a range of materials and colours.

How long does a leather strap last on the Breitling Navitimer AB012012.BB02.743P?

The lifespan of a leather strap on the Navitimer AB012012.BB02.743P depends on the material and conditions of use. A quality vegetable-tanned calfskin strap, maintained with regular applications of a neutral leather conditioner, will retain structural integrity for 2–4 years of daily wear. Alligator leather, being denser and less porous, typically lasts longer. Prolonged exposure to perspiration or water is the primary cause of deterioration; in sporting contexts, alternating with a rubber or NATO strap is recommended.

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