Strap for Day-Date 36 Everose Gold / Diamond / Rose-Diamond / President

The lug width of the Rolex Day-Date 36 128345RBR-0009 is 20 millimetres. This dimension is measured within the lug seat inside the case, where the spring bars are housed. It is essential to verify this measurement before purchasing any replacement strap, as even a minor deviation would prevent correct insertion of the original strap.

For a Day-Date 36 in 18-carat rose gold, natural alligator represents the most coherent pairing from both aesthetic and formal perspectives. The regular scale texture, the natural patina that develops with ageing, and the controlled degree of lustre amplify the inherent elegance of the watch. Valid alternatives include shell cordovan for a slightly more sporty tone, or vegetable-tanned calf for daily wear with character development over time.

Strap replacement requires a specific tool for extracting the spring bars (small metal springs that secure the strap to the lug posts). For Rolex watches, it is recommended to contact an authorised service centre or a specialist watchmaker: Rolex advises against DIY due to the delicate mechanisms involved. If you prefer a personalised service, Casati Milano offers direct atelier consultation with WhatsApp follow-up during production.

A high-quality aftermarket strap (such as those made by Casati Milano) does not void the Rolex warranty on the case and movement, provided the change is made non-destructively by competent professionals. However, Rolex does not provide coverage on non-original straps. To maximise protection and quality, it is advisable to choose craftspeople with a solid track record and product warranty (Casati Milano offers an 18-month warranty against manufacturing defects).

The lifespan of a leather strap depends on usage intensity, climatic conditions, and material quality. An alligator strap in vegetable tanning used daily on a Day-Date 36 can remain functionally and aesthetically acceptable for 3–5 years, developing a mature patina in the process. With regular maintenance (cleaning, drying after moisture exposure), the period extends. Calf, being more fragile, has shorter lifecycles (2–3 years in intensive use). Casati Milano supplies straps with an 18-month warranty against manufacturing defects.