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

The lug width of the Rolex Day-Date 36 118388-0186 is 20 millimetres. This measurement corresponds to the distance between the lug holes on the case and represents the original standard for the 36mm model since 1956. To verify the measurement, extract the lug axis (on the 6 o'clock side) and measure the distance between the outer edges of both holes. It is crucial to respect this measurement to ensure mechanical compatibility and preserve case integrity.

For an 18-carat yellow gold case, alligator remains the most traditional and luxurious choice: the aligned scales create a texture that reflects the refinement of gold. Vegetable-tanned alligator develops a natural patina over time. Alternatively, calf leather with vegetable tanning offers a delicate grain, whilst shell cordovan (horse leather) guarantees superior durability and a fascinating oxidative patina. For summer wear, a cotton NATO or rubber strap permits stylistic flexibility.

To change the strap, you must extract the lug axes using a specific tool (spring bar tool). Position the watch on a soft surface to prevent scratches. Insert the tool into the hole beneath the lug, press gently to compress the internal spring of the axis, then extract the axis. Repeat on the other side. Once both axes are removed, align the new strap holes with the axes and reinsert them with light pressure until they click into place. Verify that the lug is secure before wearing the watch.

Yes, provided it respects the 20mm lug width specification. A high-quality artisanal strap, crafted with meticulous attention to Rolex compatibility, offers not only personalised aesthetics but also superior construction compared to industrial substitutes. It is essential to purchase from certified manufacturers who understand Rolex construction tolerances and lug mechanics. MilanoStraps offers 20mm straps specifically engineered for this reference, featuring premium materials and artisanal craftsmanship.

The lifespan of a leather strap depends on the material and frequency of use. An alligator strap with vegetable tanning has a longevity of 3-5 years with daily wear, with the possibility of being regenerated through professional restoration. Shell cordovan, due to its natural density, can last 5-7 years or longer. A calf leather strap with vegetable tanning typically has a lifespan of 2-4 years. Factors such as sun exposure, humidity and perspiration accelerate ageing. Regular maintenance (cleaning and conditioning) can significantly extend the strap's life. An artisanal strap crafted with superior construction care will tend to last longer than an industrial product.