Strap for Datograph Up/Down Pink Gold

The lug width (also known as lug width or strap width) of the A. Lange & Söhne Saxonia 405.031 is 20mm, measured internally between the two spring bar pins. This dimension is standard across all references of this model and ensures optimal proportion between the 41mm case and the wrist. To verify it, use a digital calliper to measure between the pins with precision to at least one-tenth of a millimetre.

For the Saxonia 405.031 in pink gold, alligator represents the choice of excellence: its fine grain and exceptional patination create aesthetic continuity with the precious metal without competing with the simplicity of the dial. Vegetable-tanned calf leather offers a sophisticated and durable alternative. For those who appreciate supreme leathers, shell cordovan guarantees generational longevity and unique chromatic evolution. The ideal colours are cognac brown, aged tobacco, or deep black, depending on the context of use.

Changing the strap requires extraction of the spring bars that connect the strap to the case lugs. Using a specialised tool (spring bar tool), gently push the bar downward until the internal spring disengages, then remove the old strap. Insert the new strap by aligning the holes with the bars, then fully reinsert the bars until they lock completely. If you are not experienced, we recommend having this operation performed by a qualified watchmaker or by Casati Milano.

All straps with 20mm lug width are compatible with the Saxonia 405.031. At milanostraps.it you will find a dedicated catalogue of artisanal 20mm straps in multiple materials: alligator, calf leather, shell cordovan, rubber and special variants. Straps must have terminals suitable for attachment via standard 20mm-width spring bars.

A leather strap of excellent quality (alligator, premium calf, shell cordovan), worn daily, has an average lifespan of 5-7 years. Longevity depends on frequency of wear, exposure to moisture and perspiration, and maintenance. With proper maintenance (periodic cleaning, seasonal conditioning with specific creams) and non-intensive use, it is possible to extend the life beyond 10 years. Casati Milano provides an 18-month warranty on manufacturing defects for made-to-measure straps.