Strap for Datejust 31 White Gold Diamond / Silver

The lug width of the Rolex Datejust 31 reference 278289rbr-0012 is 16mm. This measurement should be taken with a digital calliper positioned between the lugs, perpendicular to the vertical axis of the case. It is a specific dimension of the 31mm Datejust range, requiring straps made on a dedicated template with curved ends to follow the profile of the white gold case.

For the Datejust 31 278289rbr-0012 in white gold with a diamond-set bezel, a Mississippiensis alligator strap with vegetable tanning is technically the most coherent choice: the scale grain echoes the facets of the brilliant-cut diamonds. Shell cordovan in a mirror finish is an alternative for those seeking a smooth surface with a developing patina. In both cases, a deployant clasp in steel or white gold PVD visually balances the weight of the case.

To replace the strap on the Datejust 31, you need a springbar tool (fork-type) with a tip thickness of 1.0–1.2mm, suitable for use with white gold lugs. Insert the tool into the groove between the lug and the spring bar, compress the bar and slide out the strap. It is advisable to protect the case surface with Mylar tape or a soft cloth before working, to avoid scratching the polished gold finish.

Yes. Aftermarket straps with a 16mm attachment and curved ends are compatible with the Datejust 31 278289rbr-0012. Milano Straps offers a selection of handcrafted leather, alligator and rubber straps made specifically for this lug width, with keeper and buckle calibrated to 16mm. It is important to verify that the ends are curved (curved end) to fit the Oyster case profile correctly.

The lifespan of a leather strap on a Datejust 31 depends on the material and daily use. A quality vegetable-tanned alligator strap, with periodic conditioning (nourishing cream every 3–4 months), maintains its structure and finish for 3–5 years with regular wear. Shell cordovan, thanks to the density of its fibres, tends to last longer while developing a characteristic patina. Heat, prolonged contact with water and perfumes accelerate the deterioration of the leather.