Strap for Datejust 31 White Gold Diamond / President / Bronze Roman

The lug width for the Datejust 31 178159-0050 is precisely 16 millimetres. This measurement must be respected to the millimetre: any deviation compromises strap stability on the case and accelerates wear on the white gold lugs. When commissioning a strap, always confirm with the maker that the stated lug width is measured from the inside faces of the attachment points.

For the Datejust 31 178159-0050 in white gold, Mississipi alligator remains the most coherent choice: its regular grain and natural lustre enhance elegance without competing with the gold. If you prefer a more pronounced texture, Japanese shell cordovan develops a profound patina over time that dialogues beautifully with gold reflections. Vegetable-tanned calf leather is ideal if you seek a patina that matures over the years, assuming increasingly rich hues.

The Datejust 31 uses a standard spring bar: with a specialist tool (or via a qualified watchmaker), you release the tension of the internal spring to slide the bar horizontally out of its housing. Never force the operation: the lug holes in gold are delicate. We recommend having this performed by an authorised Rolex centre or specialised watchmaker to avoid damage to the lugs.

Yes, but with one fundamental condition: the strap must be constructed specifically for the 16mm lug width and must respect the aesthetic proportions of the watch. The Datejust 31 is not a sports model; a high-quality aftermarket strap must maintain stylistic coherence with the lightness and refinement of the case. We always recommend specialised artisans who understand Rolex geometry.

A quality leather strap (alligator, cordovan, calf) typically lasts 3–5 years with daily wear, provided it is constructed with impeccable craftsmanship and the leather has been naturally tanned. Longevity depends on leather quality, construction, and crucially on tanning method: vegetable-tanned leathers age better and develop patina, whilst chrome-tanned leathers have more unpredictable timescales. A strap made-to-measure for 16mm experiences less lateral stress on the lugs and lasts longer.