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

The lug width of the Rolex Datejust 31 178159-0066 is 16 millimetres. This specification is critical when selecting a compatible strap: the strap must fit perfectly between the lugs with zero lateral play. We recommend verifying the lug width using a digital calliper, positioned perpendicularly to the case attachments. Any measurement error will result in complete incompatibility.

For the Datejust 31 178159-0066 in white gold, we recommend three principal materials: alligator, for a classical and formal aesthetic with evolving patina; box calf, for versatility and daily scratch resistance; shell cordovan, for those seeking a premium leather that develops an extraordinarily sophisticated patina. Your choice depends on intended use and personal aesthetic preference. A technical rubber strap remains the pragmatic option for intensive wear and humid environments.

Strap replacement on a Rolex Datejust 31 requires removal of the spring bars using a dedicated tool called a "spring bar tool." The procedure is straightforward: gently remove the spring bar from one side, slide off the old strap, insert the new strap into the lug, and reinstall the spring bar. However, we recommend professional assistance on your first attempt, particularly with a timepiece of Rolex's value. Casati Milano can guide you step-by-step via WhatsApp if you purchase a strap from Milano Straps.

Absolutely. The 16mm lug width is an industry standard; any strap—branded or artisanal—compatible with this specification will fit perfectly. Many Rolex owners choose aftermarket straps to personalise their watches. Milano Straps offers a curated collection of 16mm straps, designed and hand-crafted to ensure maximum aesthetic and functional compatibility with Rolex models of this size.

A high-quality natural leather strap typically lasts 3–5 years with daily wear, depending on frequency of use, sun exposure, humidity, and maintenance. The leather gradually thins, colour evolves, and eventually replacement may be required. With 3–4 days weekly use and regular care (gentle cleaning, protection from excessive humidity), you can extend lifespan to 7–8 years. Milano Straps includes an 18-month manufacturing guarantee, covering the critical break-in period.