Breitling · Premier

Strap for Premier Automatic 40 Stainless Steel / Anthracite / Nubuck Brown / Tang

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
ReferenceA37340351B1X2
FamilyPremier
MovementBreitling caliber 37 hours, minutes, small seconds | date
Year2018
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 Premier A37340351B1X2

Selected for the 20 mm lug width

All 20 mm straps →

The Premier A37340351B1X2, seen from the bench

The Breitling Premier A37340351B1X2 is a 40mm stainless steel sports-elegant watch that reinterprets the brand's historic Premier collection from the 1940s. Powered by the Breitling Caliber 37 movement with hours, minutes, small seconds at 6 o'clock and date display, it features a polished and brushed steel case with sapphire crystal and 100-meter water resistance. The 20mm lug width accommodates refined leather straps and balances the watch's proportions without altering its elegant aesthetic.

Frequently asked questions

What is the lug width of the Breitling Premier A37340351B1X2?

The lug width of the Breitling Premier A37340351B1X2 is 20mm. This measurement is taken between the two lugs using a calliper or a thin ruler. Any strap with a 20mm attachment fits directly without adapters.

What is the best strap for the Breitling Premier A37340351B1X2?

For the stainless steel Premier A37340351B1X2, a vegetable-tanned alligator strap is the most formally coherent choice, owing to the grain texture and the patina it develops over time. Shell cordovan offers a compact, long-lasting surface suited for mixed office-evening wear. Smooth calf leather in cognac or midnight blue provides the most versatile option for everyday use.

How do you change the strap on a Breitling Premier A37340351B1X2?

The strap on the Breitling Premier A37340351B1X2 is replaced using a spring bar tool, inserted into the lug hole to compress the spring bars. The operation takes approximately two minutes and requires no professional equipment, provided an appropriate tool is used to avoid scratching the stainless steel case.

Are there aftermarket straps compatible with the Breitling Premier A37340351B1X2?

Yes. Any strap with a standard 20mm attachment and spring bars is compatible with the Breitling Premier A37340351B1X2. Milanostraps.it offers a selection of handcrafted 20mm straps in various materials and finishes compatible with this reference. The Casati Milano atelier also produces bespoke straps with personal leather selection.

How long does a leather strap last on a Breitling Premier A37340351B1X2?

The lifespan of a leather strap depends on the material and frequency of use. A good-quality calf leather strap typically lasts 12 to 24 months with daily wear. Vegetable-tanned alligator, due to the density of the hide, can exceed 3 to 5 years with proper care — nourishing cream, rotation with other straps, and protection from moisture. Shell cordovan ranks among the most durable owing to the compactness of the leather.

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