Strap for Premier Automatic Day & Date 40 Stainless Steel / Black / Bracelet

The lug width of the Breitling Premier A45340241B1A1 is 20mm. This measurement is taken with a vernier calliper on the inner side of the lugs, where the strap sits. It is a standard dimension in high-end watchmaking, ensuring a wide availability of compatible straps.

For the Premier A45340241B1A1, a full-grain vegetable-tanned calf leather strap is the most coherent choice with the vintage spirit of the collection, developing an authentic patina over time. Hornback alligator suits formal occasions, while shell cordovan offers an elegant and compact alternative. For everyday or casual use, a nylon NATO or a technical rubber strap provides a practical solution.

To change the strap, use a fine-tipped spring bar tool or a 1mm flat-head screwdriver. Insert the tool into the spring bar slot on the inner side of the lug, compress the bar ends to release the strap. No particular watchmaking expertise is required, but it is advisable to work on a soft surface to protect the case finishing.

Yes, any strap with a 20mm attachment and ends suited to the curvature of the Premier's lugs is compatible. milanostraps.it offers a selection of Italian artisan straps in 20mm, compatible with this reference. For the best result, curved or semi-curved ends are recommended to match the lug geometry of the Premier.

The lifespan of a leather strap depends on the material, tanning quality and daily use. A quality vegetable-tanned calf strap, properly cared for (avoiding prolonged moisture and applying leather conditioner periodically), typically lasts 2–4 years with daily wear. Genuine alligator and shell cordovan, due to their denser fibre structure, tend to last longer, maintaining structural integrity beyond 4 years.