Strap for Datejust 31 Stainless Steel/ Yellow Gold / Domed / Olive - Diamond / Jubilee

The lug width of the Rolex Datejust 31 278243-0030 is 16 millimetres. This measurement corresponds to the distance between the attachment pins that connect the strap to the case. Measurement should be taken between the inner edges of the case lugs. It is essential to respect this tolerance (±0.2mm) to ensure correct attachment with standard Rolex spring bars.

For the Datejust 31 steel and yellow gold version, we recommend alligator straps in cognac brown for maximum formal elegance, vegetable-tanned calf leather in bordeaux or hazelnut tones for daily versatility, or shell cordovan for those who appreciate patina development over time. Rubber straps remain ideal for sporting use. The choice depends on context and personal colour preference.

Strap replacement requires a spring bar tool (forked implement). Position the Datejust on a soft cloth, insert the tool under the upper attachment pin until the internal spring compresses slightly, extract the pin, remove the old strap, align the new strap with the holes, and reinsert the pin until it clicks into place. Avoid excessive pressure that could scratch the case.

Yes, any strap with a 16mm lug width is compatible with the Datejust 31 278243-0030, provided the tolerance is respected within ±0.2mm. High-quality artisanal straps (such as those produced by Casati Milano) guarantee precise compatibility. Always verify lug width before purchase and check that the pins engage with slight resistance.

A high-quality artisanal leather strap (alligator, shell cordovan, calf) typically lasts 4-7 years of daily use, with variability depending on frequency of use, climate and care. Vegetable-tanned leather develops patina but remains durable; alligator maintains colour uniformity longer. Casati Milano guarantees its straps for 18 months against manufacturing defects. Regular maintenance (cleaning with a damp cloth, natural drying) significantly extends durability.