Strap for Day-Date 36 Yellow Gold Diamonds / President Diamonds / Champagne Roman

The lug width of the Rolex Day-Date 36 118388-0063 is 20 millimetres. This measurement corresponds to the width of the space between the case lugs where the watch strap is fitted. It is essential to verify this dimension precisely before ordering an aftermarket strap, as any tolerance error would result in a visible gap between the lug and the strap.

Alligator remains the most elegant and traditional choice for the Day-Date 36 118388-0063: its regular scales create serene contrast with the gold and natural flexibility ensures flawless comfort. Vegetable-tanned leather is an excellent alternative if you desire an organic patina that evolves over time. Shell cordovan offers durability and natural lustre, whilst gummed calf with deployante buckle guarantees contemporary practicality without stylistic compromise.

Changing the strap on the Day-Date 36 118388-0063 requires a specialist tool to remove the pins connecting the lugs to the case. Position the watch on a soft cloth, locate the small lateral pins, and use a watchmaker's screwdriver or tweezers to gently prise, pushing the pin in the opposite direction. Alternate sides to avoid case distortion. If you lack experience, entrust the task to an authorised Rolex service centre or professional watchmaker to avoid risk of damage to the case.

Yes, an aftermarket strap can be used with the Day-Date 36 118388-0063 provided it respects the 20mm lug width. However, build quality is paramount: a generic strap risks presenting insufficient curvature at the extremities, creating visible gaps from the case. Choose specialised craftsmen who personalise the strap to your specific case specifications, calibrating curvature, thickness and structural rigidity with precision.

The lifespan of a natural leather strap depends upon intensity of use and quality of tanning. A good-quality alligator, worn daily on a Day-Date 36, maintains structural integrity for 3 to 5 years. Shell cordovan may last considerably longer thanks to its density, whilst vegetable-tanned leather tends to age visually earlier but remains functional for 4 to 6 years. Regular maintenance—avoiding excessive moisture and cleaning with a soft cloth—significantly extends the useful life of the strap.