Strap for Datejust 31 Stainless Steel Diamond / Jubilee / Grey - Roman

The lug width of the Rolex Datejust 31 reference 278384RBR-0026 is 16mm. This measurement refers to the internal distance between the two lugs of the case, best verified using a digital calliper. It is a non-standard width in the current watchmaking landscape, so it is essential to confirm this figure before purchasing a replacement strap.

For the Datejust 31 278384RBR-0026, a Louisiana alligator strap in vegetable-tanned leather is the most coherent choice given the white gold and steel case. Shell cordovan offers a more understated, sartorial alternative, whilst boxcalf leather suits daily wear. For more active contexts, a technical rubber or NATO nylon strap is a practical option.

To replace the strap on a Datejust 31, the spring bars connecting the strap to the case lugs must be released. This is done using a dedicated spring bar tool or a fine flat-blade screwdriver applied with controlled pressure. To avoid scratching the lugs or case, it is advisable to entrust this operation to a qualified watchmaker or specialist atelier.

Yes, high-quality aftermarket straps are available for the Datejust 31 278384RBR-0026. The critical specification to match is the 16mm lug width. Milanostraps.it offers a curated selection of handcrafted straps in alligator, shell cordovan and calf leather, all calibrated to this measurement and available with customisable finishes and stitching.

The lifespan of a leather strap depends on the type of leather, frequency of wear and level of care. A quality alligator or shell cordovan strap, maintained with regular cleaning and conditioning, can last between three and five years or longer. Calf leather typically has a shorter lifespan. All Casati Milano straps carry an 18-month warranty against manufacturing defects.