Rolex
Day-Date 36 118208-0077— lug 20mm

The lug width of the Rolex Day-Date 36 reference 118208-0077 is exactly 20 millimetres. This width is standard across the entire Day-Date 36 collection and is critical for ensuring a secure fit and correct visual proportion between the strap and the case. You can verify this measurement using a digital calliper, measuring the internal space between the two lugs on the case.

For the Day-Date 36 in 18-carat yellow gold, alligator leather is the traditional choice of excellence: its characteristic grain and the patina that develops over time create a perfect aesthetic dialogue with the luminosity of the gold. High-end alternatives include supple calf leather (ideal for a contemporary finish) and shell cordovan (for a deep patina that intensifies with years of wear). Your choice depends on intended use and personal style preferences.

Changing the strap on the Day-Date 36 requires removing the lateral lugs from the case. Use a spring bar remover (a specialised, slender tool) to compress the internal springs of the lugs, then withdraw the strap ends. Position the new strap in the lugs, ensuring the springs are fully inserted. If you lack experience, we recommend consulting a certified watchmaker or Casati Milano atelier.

Yes, you can use aftermarket straps compatible with 20mm lug width. It is essential to select straps from quality-certified manufacturers that respect safety and durability standards. milanostraps.it offers a specialised collection of artisanal straps in alligator, calf, shell cordovan and other materials, all tested for compatibility with the Day-Date 36 and other 20mm Rolex collections.

The lifespan of a leather strap depends on material quality, daily wear and climatic conditions. A high-end alligator or shell cordovan strap, with proper care, can last 5-7 years in daily use, developing a fascinating natural patina. Calf leather straps tend towards slightly shorter durability (3-5 years). Vegetable-tanned leather, though more delicate to moisture, offers unique colour evolution. We recommend rotating straps regularly to extend the life of each strap.