Strap for Premier Heritage B19 Datora 42 Perpetual Calendar 140th Anniversary

The lug width of the Breitling Premier RB19401A1B1P1 is 20mm. This measurement should be verified using a calliper between the two lugs at the strap attachment point to ensure an accurate, play-free replacement.

For a red gold case housing a perpetual calendar and moonphase, a vegetable-tanned alligator strap is the most coherent pairing. The crosshatch grain complements the dial's complexity, and the patina that develops over time gives each example its own character. Shell cordovan is a refined alternative, offering a smooth surface and natural lustre of considerable distinction.

The strap is released using a fine-tipped spring bar tool inserted into the lug recess, applying gentle pressure to disengage the spring bar. It is advisable to protect the red gold case with a soft cloth during the operation. For a timepiece of this value, entrusting the work to a watchmaker or to the Casati Milano atelier is strongly recommended.

Yes, any strap with a standard 20mm lug width is technically compatible with the Breitling Premier RB19401A1B1P1. Milano Straps offers a curated selection of artisanal leather, alligator and other material straps in 20mm, available both online and in bespoke form at the Casati Milano atelier.

The lifespan of a leather strap depends on the material, the tanning method and daily use. A quality vegetable-tanned alligator strap, properly maintained — avoiding prolonged water exposure and occasionally applying a leather conditioner — can last between 3 and 7 years while retaining excellent structural integrity. Milano Straps provides an 18-month warranty against manufacturing defects.