Rolex
Datejust 31 178288-0045— lug 16mm

The lug width of the Rolex Datejust 31 reference 178288-0045 is 16 millimetres. This measurement represents the internal distance between the two lugs on the case and is critical for strap compatibility. A strap of different width will not fit properly and may damage the yellow gold lugs on the case.

For the Datejust 31 178288-0045 in yellow gold, we recommend alligator leather in dark brown tones or calf leather with vegetable tanning in amber hues. Alligator offers a regular grain and develops a noble patina over time, while vegetable-tanned leather guarantees sustainability and warm colourways that naturally complement 18-carat gold. The choice depends on your use case: formal versus daily wear.

Strap replacement requires specific tools. Position the watch on a soft surface with the case back facing upward. Use an appropriate small flathead screwdriver to gently extract the spring bar securing the lug from the case. Repeat on both sides. Insert the lugs into the new strap following the same procedure in reverse. For the 178288-0045, we recommend having this operation performed by an authorised Rolex service centre or an experienced watchmaker to avoid damage to the yellow gold case.

Yes, but with discernment. Any quality strap with a 16-millimetre lug width is technically compatible. However, leather quality, finishing and tactile feel vary enormously. We recommend premium leathers such as alligator, shell cordovan or vegetable-tanned calf, as the Datejust 31 in yellow gold deserves a strap worthy of its construction. Avoid synthetic or inferior-quality leather straps, as they diminish the overall experience. A bespoke strap made-to-measure by a specialist atelier guarantees maximum quality and personalisation.

Leather strap longevity depends on material quality, frequency of wear and environmental conditions. A high-quality alligator or shell cordovan strap, worn daily, typically lasts 3–5 years before replacement due to natural wear. Vegetable-tanned leather tends to last slightly less (2–4 years) than dyed leathers. Factors such as perspiration, prolonged moisture exposure and direct sunlight accelerate ageing. A bespoke strap crafted using artisanal techniques can be remade or restored, extending its useful life indefinitely.