Rolex
Day-Date 36 118346-0090— lug 20mm

The lug width of the Rolex Day-Date 36 118346-0090 is precisely 20 millimetres. This is the width of the case where the strap attaches, measured shoulder-to-shoulder at the base of the spring bar holes. This is an exact tolerance and critical specification: any compatible strap must respect this dimension precisely.

Alligator is the most stylistically coherent choice, as its natural geometric pattern dialogues perfectly with the conservative aesthetics of platinum. Alternatively, a calf box strap provides an almost lacustrine surface, or a shell cordovan introduces a fascinating contrast with the coldness of the metal. Avoid fabrics or rubber: the Day-Date tolerates no aesthetic compromise.

The strap is changed by removing the spring bars from the case using a specialised tool (spring bar tool). Insert the flat tip of the tool into the slot of the bar, push gently to retract the internal spring, remove the old strap and insert the new one, ensuring the bar is fully engaged. It is a simple operation but requires caution to avoid scratching the case.

Yes, provided the lug width is exactly 20mm. A bespoke strap manufactured with a 20mm lug width is perfectly compatible and offers greater customisation possibilities than standard Rolex straps. The quality of craftsmanship and materials can even surpass factory straps.

A natural leather strap of good quality, worn daily, has an average lifespan of 3-5 years, depending on intensity of use, ambient humidity and maintenance. Vegetable-tanned leather tends to last longer than other leathers, acquiring a fascinating patina over time. Regular maintenance with specific conditioners significantly extends the useful life of the strap.