Strap for Datejust 31 Rose Gold / Domed / MOP / President

The lug width of the Rolex Datejust 31 278245-0014 is 16 millimetres. This dimension is the manufacturing standard for the Datejust 31 and determines compatibility with all aftermarket straps. To verify the lug width correctly, measure the internal distance between the two lugs on the case using a digital calliper, or consult the official Rolex documentation provided with your timepiece at purchase.

For a Datejust 31 in Everose gold, we primarily recommend an alligator strap with vegetable tanning, which creates a natural aesthetic dialogue between the softness of leather and the warm tone of rose gold. If you prefer a more formal solution, dark brown or burgundy tinted calf leather represents a classic and durable choice. For daily wear, natural rubber straps in taupe or anthracite shades offer practicality without compromising elegance. Your colour choice should consider the dial: for blue dials, favour dark blue straps; for champagne or silver, choose warm browns; for black dials, pure black or burgundy create sophisticated effects.

Changing the strap on the Datejust 31 requires a specialised tool (spring bar tool) to remove the spring bars—the small elastic pins that secure the strap to the lugs. Place the watch on a soft cloth, locate the lower spring bar, apply gentle downward pressure with the tool to release the spring, and extract the strap. Repeat the procedure on the opposite side. To fit the new strap, align the strap holes with the lugs, reinsert the spring bar ensuring both ends lock correctly in their sockets. If you prefer to avoid any risk of damage, entrust the operation to a professional or contact Casati Milano for a professional service.

Yes, it is entirely possible and advisable to use quality aftermarket straps on a Datejust 31 278245-0014, provided they respect the 16-millimetre lug width. An artisanal strap in first-grade alligator or calf leather may offer tactile and construction characteristics superior to standard straps, as well as the possibility of personalising colour, texture and buckle finish according to your preferences. At Milano Straps you can select certified 16mm straps, or entrust yourself to Casati Milano for a completely bespoke solution, following every phase of craftsmanship.

The lifespan of a leather strap depends on frequency of use, environmental conditions and tanning quality. An alligator or calf leather strap with vegetable tanning used daily typically maintains optimal functionality for 3-5 years before requiring replacement. Vegetable-tanned leather develops a patina that enriches the aesthetic over time, although the material progressively softens. Frequent exposure to moisture, perspiration and sunlight accelerates ageing. More sporadic or seasonal use can extend the strap's life to 7-10 years. To maximise longevity, periodically clean the strap with a damp cloth, avoid water immersion unless explicitly declared by the manufacturer, and store the watch in a stable climate when not in use.