Strap for 1815 Tourbillon Handwerkskunst

The lug width of the A. Lange & Söhne 1815 730.048 is 20 mm. This measurement is determined by the width of the 39.50 mm case and the proportion of the horns. It is essential to verify that any aftermarket strap fitted respects this exact dimension to ensure a correct fit and uniform suspension of the case on the wrist.

For the rose gold 730.048, the most recommended materials are: alligator with vegetable tanning (for the geometric grain that dialogues with the metal), calf leather with vegetable tanning in brown or cognac tones (for the patina that ages beautifully), and shell cordovan in deep bordeaux (for those seeking pronounced texture). Avoid cool colours that would create tonal dissonance with the warmth of rose gold.

To change the strap on the 730.048, you must use a spring bar tool (a specific instrument for removing the lugs). Position the tool under the outer end of the lug, press the release button of the internal spring, and gently extract the lug from its seat. The procedure must be carried out carefully to avoid scratching the horns. We recommend having this operation performed by an authorised service centre or experienced artisan.

Yes, it is absolutely possible to fit an aftermarket strap on the reference 730.048, provided it respects the 20 mm lug width. Many specialised artisans and niche brands produce 20 mm straps compatible with the 1815. We recommend straps made with vegetable tanning, alligator or shell cordovan to preserve the aesthetic value of the watch. Always verify that the end links are proportioned to the case.

The lifespan of a leather strap depends on the quality of the tanning, the type of material and the frequency of use. With vegetable tanning, a high-quality artisanal strap can last 3-5 years under normal conditions, developing an appreciable patina and softness over time. Alligator and shell cordovan generally prove more resistant to wear. The standard warranty against manufacturing defects is 18 months. A strap with a deployant buckle represents a larger investment but protects the security of the fitting.