Strap for Day-Date 36 Yellow Gold Diamonds / Oyster / Black MOP Computer

The lug width (ansa measurement) of the Rolex Day-Date 36 reference 118388-0193 is exactly 20mm. This dimension represents the horizontal distance between the centres of the two lateral spring bar pins on the yellow gold case. To verify this measurement, place a ruler across the lugs: the value must correspond precisely to 20mm to ensure complete compatibility with aftermarket straps.

For the Day-Date 36 118388-0193, we recommend fine artisanal leather. Dark brown alligator amplifies the sartorial elegance of the yellow dial; burgundy shell cordovan develops progressive patina over time, highlighting manual craftsmanship; vegetable-tanned calf ensures visible ageing and sustainable construction. A thick leather NATO in burgundy or dark brown tones also enhances legibility without chromatic competition.

Strap replacement requires a spring bar tool with a fine, bifurcated tip. Position the watch on a soft surface (cotton cloth or felt pad). Gently press inward on the elastic spring of the lower lug, lifting the metal attachment point. Once the old strap is released, insert the new one by aligning the holes with the lugs. Press until a definitive click is felt: the lug must move freely without horizontal play. Repeat for the other end. If inexperienced, entrust the task to a qualified watchmaker.

Yes, absolutely. Any strap with a 20mm lug width is mechanically compatible with the Rolex Day-Date 36 reference 118388-0193. Artisanal fine leather quality (alligator, shell cordovan, vegetable-tanned calf) confers constructive dignity to the watch. Avoid synthetic or polyurethane solutions: the timepiece deserves noble materials. Casati Milano offers 20mm straps with an 18-month warranty against manufacturing defects, or discover the collection available online.

A fine leather strap (alligator, shell cordovan, calf) lasts an average of 3–5 years with daily wear, depending on humidity exposure, thermal variations, and frequency of use. Shell cordovan tends to last longer due to the natural fibre density. Vegetable-tanned leather develops progressive patina without structural degradation for at least 4–6 years. Storing the watch away from excess humidity and heat significantly extends functional lifespan. Casati Milano offers an 18-month warranty against manufacturing defects, with the possibility of repair and leather renewal thereafter.