Strap for Day-Date 36 Yellow Gold Diamonds / President / Silver

The Rolex Day-Date 36 118348-0036 features a lug width of 20mm. This measurement is specific to the 36-millimetre case and is not interchangeable with other watch models. A correctly constructed strap must have exactly 20mm width to ensure precise fit to the lugs and balanced weight distribution on the wrist.

For the Day-Date 36 118348-0036 in yellow gold, the most appropriate materials are alligator, shell cordovan and vegetable-tanned calf leather. Alligator offers the most formal geometric grain and harmonises elegantly with yellow gold; shell cordovan provides luminous patina as it ages; vegetable-tanned calf allows natural ageing with patina development over time. Synthetic leathers or plastic materials must be avoided entirely.

Changing the strap on the Day-Date 36 118348-0036 requires extraction of the lugs using a dedicated spring bar removal tool. Position the watch on a soft cushion, identify the lateral pins on the case, use the tool to push them sideways and release the lugs. Insert the new strap's lugs in reverse order. We recommend having this operation performed by a qualified watchmaker to avoid micro-scratches on the case.

Technically yes, but with important caveats. A generic 20mm aftermarket strap may not respect the aesthetic proportions of the Day-Date 36 case and movement. Choosing a specialised maker, such as Casati Milano, ensures the strap is constructed by calibrating the lug width, passant length and buckle position in harmony with the specific proportions of the 36mm case. A poorly proportioned strap compromises the visual presentation of the watch.

A high-quality natural leather strap (alligator, cordovan or vegetable-tanned calf) typically lasts 3-5 years with moderate daily wear, and can extend to 7-10 years with occasional or exclusively evening use. Longevity depends on exposure to humidity, perspiration, mechanical stress and periodic care. An annual protective treatment with specialised products significantly extends the strap's lifespan. Casati Milano offers an 18-month warranty against manufacturing defects on the strap.