Strap for Datejust 31 Rolesor Yellow Domed Diamond / Oyster / Champagne Floral

The Rolex Datejust 31 ref. 178343-0003 has a lug width of 16mm. This measurement refers to the internal distance between the two lugs at the point where the strap attaches to the case. Any aftermarket replacement strap must be manufactured precisely to this width: even a 1mm discrepancy will prevent correct fitment and compromise the visual balance of the pairing.

For the Datejust 31 in yellow gold and steel Rolesor, alligator straps in cocoa or burgundy tones offer the most harmonious pairing, as the scale texture complements the gold details without overpowering them. Shell cordovan provides a more urban aesthetic, while vegetable-tanned calf leather develops a distinctive patina over time. In all cases, the attachment width must be 16mm with a tapered cut towards the buckle to respect the proportions of the 31mm case.

To remove the original strap from the Datejust 31, a dedicated spring bar tool is required. The tool is inserted into the side hole of the lug to compress the spring bars that secure the strap in place. Care should be taken to avoid scratching the case: it is advisable to rest the watch on a soft cushion and work under adequate lighting. The new 16mm strap is fitted by engaging the spring bars symmetrically into both lug slots.

Yes. The Datejust 31 ref. 178343-0003 accepts any aftermarket strap with a standard 16mm attachment and standard spring bars. milanostraps.it offers a curated selection of Italian handcrafted straps made specifically for this width, available in alligator, calf, shell cordovan and vegetable-tanned leather, with a choice of pin buckle or deployant clasp closure. Each strap is hand-finished and available in multiple lengths to accommodate any wrist circumference.

The lifespan of a leather strap depends on the quality of the hide, conditions of use and maintenance. A high-grade alligator strap, kept away from water, excessive perspiration and direct UV exposure, can last between three and five years with regular wear. Shell cordovan, owing to the density of its fibre structure, tends to last longer whilst developing a desirable patina. Vegetable-tanned leather requires periodic conditioning with a colourless cream. milanostraps.it warrants its straps for 18 months against manufacturing defects.