Breitling · AVI

Strap for Navitimer Super 8 B20 Automatic 46 Stainless Steel / Black / NATO

Takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width23 mm
Case diameter46 mm
ReferenceAB204010.BG92.491X
FamilyAVI
MovementBreitling caliber B20 hours, minutes, seconds | date | chronometer
Year2018
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Frequently asked questions

What is the lug width of the Breitling AVI AB204010.BG92.491X?

The Breitling AVI AB204010.BG92.491X features a 23mm lug width, a non-standard measurement that requires straps specifically made for this size. It is advisable to verify the exact measurement with a digital calliper placed between the case lugs before ordering an aftermarket strap.

What is the best strap for the Breitling AVI AB204010.BG92.491X?

The most suitable options for the Breitling AVI AB204010.BG92.491X include Louisiana alligator leather for formal settings, vegetable-tanned calfskin for a vintage aesthetic, nylon NATO for historical coherence with the model's military origins, and vulcanised rubber for active use. The choice depends on the context and the chromatic pairing with the dial.

How do you change the strap on a Breitling AVI AB204010.BG92.491X?

The strap on the Breitling AVI AB204010.BG92.491X is secured by springbars, the spring-loaded bars connecting the strap to the case lugs. A double-ended springbar tool is sufficient to release the bars without scratching the case. The operation takes approximately two minutes and requires no specialist equipment.

Are there aftermarket straps compatible with the Breitling AVI AB204010.BG92.491X?

Yes. Since the 23mm lug width is a specific measurement, not all manufacturers include it in their standard production. Milanostraps.it offers handcrafted aftermarket straps made to this size, available in leather, alligator, NATO and rubber. Casati Milano also provides fully bespoke straps with personal material selection at the atelier.

How long does a leather strap last on a Breitling AVI AB204010.BG92.491X?

The lifespan of a leather strap depends on the material, care and frequency of wear. A quality vegetable-tanned calfskin strap typically lasts between 2 and 4 years with daily use. An alligator strap, if treated with nourishing cream and alternated with other straps, can exceed 5 years. Casati Milano provides an 18-month guarantee against manufacturing defects on all its straps.

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