Strap for Grand Arkade Big Date Yellow Gold / Silver

The lug width (ansa width) of the A. Lange & Söhne Arkade 106.021 is exactly 18 mm. This measurement has been precisely calibrated to maintain the aesthetic balance of the rectangular case. To verify, position a digital calliper between the inner lugs of the case, perpendicular to the dial: you will read 18 mm. This precision is essential to ensure a perfect and proportionate fit.

For the Arkade 106.021 in yellow 18-carat gold, alligator leather is the most natural choice thanks to its geometric texture that dialogues with the sharp lines of the case. Vegetable-tanned calf leather offers a smooth surface and a patina that evolves over time. Shell cordovan in burgundy red amplifies the lustre of the yellow gold. For daily versatility, even rubber or structured textile remains coherent with the watch's design.

To change the strap, use a spring bar tool (dedicated tool with opposite curves). Position yourself on one side of the case and gently press the less visible spring button, sliding the end of the spring inward. Once the spring is extracted, pull the strap out of the lug. Repeat from the other side. To insert the new strap, align the spring, insert one end into the lug hole and, with the tool, compress and lock the spring in the other hole. Verify that the strap is securely fastened before wearing the watch.

Yes, you can use any strap with an 18 mm lug width. A quality aftermarket strap, made in alligator, calf or shell cordovan by an experienced craftsman, is not only compatible but often offers superior customisation compared to original options. MilanoStraps and Casati Milano specialise in custom straps for the 18 mm width, guaranteeing construction quality and impeccable fit.

The lifespan of a leather strap depends on the material, frequency of use and maintenance. Quality artisanal alligator or calf lasts typically 3–5 years with moderate daily use. Shell cordovan, thanks to its intrinsic density, can last 5–7 years or longer. Regular maintenance—gentle cleaning with a damp cloth and occasional application of leather-specific balm—significantly extends strap life. A worn strap does not compromise the watch; it can simply be replaced while keeping the case intact.