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

The Rolex Day-Date 36, reference 118388-0013, has a lug width of 20mm. This measurement is taken with a calliper between the two lugs at the narrowest point of the lug bridge, and is the key parameter for selecting any compatible replacement strap.

For the Day-Date 36 118388-0013 in yellow gold, a glossy black or cognac alligator belly strap in vegetable-tanned leather is the most technically coherent choice: the geometric grain enhances the diamond-set bezel without competing with the dial. For less formal settings, a vulcanised rubber strap in black or havana offers comfort and durability whilst preserving the elegance of the precious metal.

To replace the strap on the Rolex Day-Date 36, a proper springbar tool is required. Insert the tip of the tool into the lug hole or springbar groove to compress the springbar and release the strap. Care must be taken not to scratch the yellow gold case: it is advisable to protect the lugs with masking tape before proceeding. The new 20mm strap is fitted by compressing the springbars and hooking them into the lugs.

Yes. Any strap with a 20mm lug width and a straight or slightly curved end is compatible with the Day-Date 36 118388-0013. The handcrafted straps by Casati Milano and those available on milanostraps.it are made with standard 20/16mm or 20/18mm attachment dimensions and fit directly onto the original yellow gold Oyster case lugs without modification.

The lifespan of a leather strap depends on the quality of the tanning, the thickness of the hide, and daily use. A high-quality alligator or shell cordovan strap, worn regularly but not during sporting activities, typically lasts between three and five years before replacement is needed. Vegetable-tanned leather straps develop a unique patina over time but are more sensitive to moisture; slow drying away from heat sources significantly extends the strap's service life.