Strap for Premier Heritage B21 Chronograph Tourbillon Léon Breitling

The lug width of the Breitling Premier RB2120211G1P1 is 20mm. This measurement is taken with a millimetre calliper between the two lugs of the case, at the strap attachment point. A 20mm lug width gives access to a wide selection of high-quality aftermarket straps.

For an 18kt red gold case such as that of the Breitling Premier RB2120211G1P1, a vegetable-tanned alligator strap in bordeaux, midnight blue or havana brown is the most coherent choice given the model's formal register. Alternatively, box-calf leather and shell cordovan offer excellent everyday versatility.

The strap on the Breitling Premier RB2120211G1P1 is replaced using a springbar tool, inserting the tip between the lug and the strap keeper to release the spring bars. It is advisable to work on a soft surface to protect the red gold case from scratches. If in doubt, entrust the operation to a watchmaker or a specialist atelier.

Yes. The Breitling Premier RB2120211G1P1 accepts any aftermarket strap with a 20mm straight or slightly tapered end. It is important to ensure that the buckle or deployant clasp is in red gold or gold-tone PVD to maintain visual coherence with the original case. Casati Milano produces bespoke straps compatible with this reference.

The lifespan of a leather strap depends on the material and care taken. A quality vegetable-tanned alligator strap, worn on a rotating basis, typically lasts 3–5 years before requiring replacement. Calfskin averages 2–3 years. Proper maintenance — cleaning with a dry cloth, keeping the strap away from moisture and perfume — significantly extends its service life.