Strap for Day-Date 1804

The lug width of the Day-Date 36 1804 Stella Turquoise is exactly 20 millimetres. This measurement determines compatibility with aftermarket straps: any strap that does not fit correctly with this width would not be suitable for this model. To verify compatibility before purchase, measure the distance between the two lugs of the case using a calliper or ruler placed perpendicular to the case.

Alligator leather or shell cordovan are the most appropriate choices to enhance the elegance of this timepiece. Alligator offers a subtle natural texture that integrates perfectly with white gold, maintaining a formal aesthetic without excess. Shell cordovan is appreciated for its extraordinary durability and the development of patina over time. For those preferring a softer tactile sensation, vegetable-tanned calf leather is a high-quality alternative that allows for a more varied colour palette.

The strap is changed using spring bars (the small rods at the ends of the current strap) located at the extremities. Position the dedicated tool (an implement with a fine tip) in the small lateral hole of each spring bar to compress the internal spring; the bar will loosen and can be extracted from the case slots. Then insert the spring bars of the new strap into the same slots, ensuring they centre correctly. If you are unfamiliar with this procedure, a watchmaker or Casati Milano atelier can assist you without risk.

Yes, provided the strap is specifically designed for a 20mm lug width. Aftermarket straps of quality equivalent to OEM guarantee the same fit and durability. Relying on a specialist manufacturer—such as Casati Milano—ensures that construction tolerances are correct and the quality of materials is not compromised. Compatibility is guaranteed by respecting the lug width and spring bar configuration.

A quality leather strap, under normal use (not constantly exposed to water or intense perspiration), has an average lifespan of 5–7 years. Alligator and cordovan, owing to their intrinsic properties, can extend this duration by a further 2–3 years. Durability depends on the type of tanning, the number of weekly wears and care taken (avoiding prolonged water exposure, keeping the strap dry, occasional cleaning with a soft cloth). Casati Milano offers an 18-month warranty against manufacturing defects, guaranteeing maximum security in your investment.