Strap for Datejust 31 Stainless Steel/ Rose Gold / Diamond / Chocolate - Diamond / Jubilee

The lug width of the Rolex Datejust 31 ref. 278381rbr-0028 is 16mm. This measurement is taken between the lower lugs of the case using a digital calliper, measuring the internal distance between the lug walls. It is a non-standard size compared to the more common 18mm or 20mm formats, so it is essential to verify this figure before purchasing any replacement strap.

For the Datejust 31 in Everose Rolesor with Aubergine dial, the most suitable materials are vegetable-tanned alligator in tobacco or burgundy tones, which complement the warm hues of the rose gold, and smooth calf leather for formal settings. A deployant clasp in rose gold PVD steel maintains metallic consistency with the case. For sporting use, a vulcanised rubber strap in 16mm provides full water resistance without compromising the aesthetic.

To replace the strap on the Datejust 31, you will need a springbar tool and a soft work surface to avoid scratching the case. Insert the flat tip of the tool into the springbar slot within the lug, compress the spring inward and release the strap. Care must be taken not to damage the Everose gold lugs. For models with an integrated bracelet, strap replacement may require the assistance of a qualified watchmaker.

Yes. The aftermarket offers 16mm straps compatible with the Datejust 31 278381rbr-0028 in various materials: leather (alligator, calf, shell cordovan), nylon NATO, rubber and metal. It is essential to confirm that the lug width is exactly 16mm and that compatible springbars are included or available. Milanostraps.it offers a curated selection of handcrafted 16mm straps in premium leathers, with or without bespoke customisation through the Casati Milano atelier.

The lifespan of a leather strap depends on the material, tanning quality and daily use. A superior vegetable-tanned alligator strap can last between 3 and 7 years with proper care: avoid prolonged contact with water, excessive perspiration and perfumes. Calf leather tends to deteriorate more quickly, typically lasting 1 to 3 years. Shell cordovan, owing to its exceptionally dense fibre structure, is among the most durable options. Casati Milano provides an 18-month manufacturing warranty on all handcrafted straps.