Breitling · Navitimer

Strap for Navitimer GMT Stainless Steel / Silver / Bracelet

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter48 mm
ReferenceAB044121/G783/443A
FamilyNavitimer
MovementBreitling caliber Caliber B04 Hours, Minutes, Small Seconds, Additional 24 Hour Hand (adjustable) | 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 AB044121/G783/443A

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Navitimer AB044121/G783/443A, seen from the bench

The Navitimer represents one of Breitling's historic chronographs, developed in the 1950s for civil aviation. It is equipped with the automatic caliber B04 with column-wheel chronograph function, small seconds, adjustable GMT indication and chronometer certification. The lugs measure 24mm in width.

Frequently asked questions

What is the lug width of the Breitling Navitimer AB044121/G783/443A?

The Breitling Navitimer AB044121/G783/443A features a lug width of 24 millimetres. This dimension was engineered by Breitling to achieve optimal proportional balance with the 48mm case diameter, ensuring structural stability during intensive operational use. Verifying the lug width with a digital calliper positioned between the spring bars is essential before purchasing a replacement strap.

Which strap material is most suitable for the Breitling Navitimer AB044121/G783/443A?

For a technical instrument-watch of this magnitude, we recommend alligator leather with vegetable tanning for formal elegance, Tuscan calf for ergonomic adaptability, shell cordovan for exceptional longevity, or high-tenacity polyamide NATO for intensive sporting applications. Selection depends on primary use context and aesthetic preference. Milano Straps offers all these options in 24mm width, customisable with initials and thread colour selection.

How do I change the strap on a Breitling Navitimer AB044121/G783/443A?

Strap replacement requires a spring bar tool to compress the lateral suspension bars. Position the tool beneath each bar, apply downward pressure, extract the old strap, then insert the new strap by aligning the bar holes with the lateral case seats. This procedure demands precision to prevent case scratching. Should you require assistance, the Milano Straps team can support you through the replacement process.

Can I use an aftermarket-compatible strap on my Navitimer AB044121/G783/443A?

Yes, any strap with a certified lug width of 24 millimetres is compatible with the Navitimer AB044121/G783/443A. Quality aftermarket straps enable optimal watch maintenance during natural wear. Milano Straps manufactures artisanal straps guaranteeing perfect compatibility, utilising certified materials and rigorously controlled manufacturing processes.

What is the expected lifespan of a leather strap on a Breitling Navitimer AB044121/G783/443A?

Durability depends on usage intensity and environmental exposure. A quality leather strap, deployed in controlled conditions and subject to regular maintenance (gentle cleaning and annual conditioning), typically lasts 3-5 years. Alligator generally outlasts calf leather. Shell cordovan delivers exceptional longevity owing to natural skin density. Milano Straps provides 18-month warranty on all artisanal straps, with renewal and specialist repair options available.

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