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

The lug width of the Rolex Day-Date 36, reference 118388-0007, measures 20 millimetres. This dimension represents the internal distance between the two spring bar holes of the yellow gold case. It is essential for ensuring that any aftermarket strap is perfectly compatible with this particular case.

For a Day-Date 36 in yellow gold, alligator remains the classical aesthetic choice due to its tactile contrast against the precious metal. However, calf leather offers superior daily comfort, whilst shell cordovan guarantees exceptional longevity (10-15 years) and superior aesthetic ageing. Your choice depends on intended use and personal preferences for elegance.

The operation requires a dedicated spring bar tool to release the lug pins. Insert the flat end of the tool into the small slot of the pin until the internal spring compresses, then extract the pin from the case. Repeat on the opposite side, then install the new pins into the replacement strap and reposition within the case. Many prefer to entrust this task to an expert to avoid scratching the gold.

Yes, absolutely. The 118388-0007 accepts any strap with a 20mm lug width, whether in leather (alligator, calf, shell cordovan, crocodile), fabric (NATO, silk) or rubber. The critical factor is dimensional compatibility of the lug attachment. Artisan straps from Casati Milano, for instance, are specifically engineered for this measurement and offer construction quality comparable to original Rolex straps.

Durability depends on material and tanning process. Calf or alligator with vegetable tanning typically lasts 4-7 years with daily use and proper care. Shell cordovan, given its natural density, can last 10-15 years. Longevity increases if the strap is not constantly exposed to moisture, perspiration and direct heat. Regular cleaning with a soft cloth and periodic application of conditioning balm significantly extends useful life.