Strap for Datejust 31 Stainless Steel Fluted / Jubilee / Black MOP

The Rolex Datejust 31 ref. 178274-0046 has a lug width of 16mm. This measurement is taken between the two lugs of the case using a digital calliper placed directly against the case. It is essential to respect this measurement to ensure correct strap fitting and a flawless aesthetic result.

For the Datejust 31 178274-0046 with a white mother-of-pearl dial and white gold bezel, the most suitable materials are lacquered white or ivory alligator leather for a tonal pairing, or natural shell cordovan for superior tactile quality. Vegetable-tanned calfskin in ice blue or pearl grey offers an elegant alternative that is chromatically consistent with the cool temperature of the dial.

To replace the strap on a Rolex Datejust 31, a dedicated spring bar tool with a double-pronged tip is required to compress the spring bars housed in the lugs without scratching the case. Work on a soft surface, releasing one end of the spring bar before the other. The process requires care, particularly with white gold cases which can mark easily. For a watch of this value, it is advisable to entrust the operation to a watchmaker or the Casati Milano atelier.

Yes, the aftermarket offers high-quality straps compatible with the Datejust 31, made specifically for the 16mm lug width. Milano Straps and Casati Milano produce handcrafted straps in alligator, calfskin, shell cordovan and other fine materials, with buckle or deployant clasp, cut and finished specifically for this measurement. Italian artisan quality guarantees a result that is comparable — and often superior in terms of personalisation — to standard factory straps.

The lifespan of a leather strap depends on the quality of the hide, frequency of use and the care it receives. A high-grade alligator or shell cordovan strap, with regular but not daily wear and correct storage away from moisture and perspiration, will retain its aesthetic and structural properties for 3 to 5 years. Casati Milano straps carry an 18-month guarantee against manufacturing defects. The use of a specific nourishing cream for luxury leather significantly extends the strap's life.