Rolex
Datejust 31 278275-0038— lug 16mm

The lug width of the Rolex Datejust 31 278275-0038 is 16 millimetres. This dimension is model-specific and represents the distance between the inner pins on which the strap is fitted. It is essential to verify this measurement with a digital calliper before purchasing a compatible strap to ensure a perfect fit without forcing or excessive play.

For a Datejust 31 in Everose (18-carat rose gold), alligator leather represents the finest choice from both aesthetic and construction perspectives. The regular scale texture and inherent softness of the material enhance the nobility of the case. Alternatively, shell cordovan offers compactness and a patina that ages elegantly, whilst calf leather with hammer finish ensures versatility of use and resistance to daily scratches.

Changing the strap on a Rolex Datejust 31 requires technical simplicity but precision. Using a dedicated tool (spring bar tool), the elastic pins that support the strap through the case's lateral lugs are removed. Once the pins are extracted, the old strap is freed. The new 16mm lug-width strap is positioned by aligning the holes with the pins, which are then reinserted and pushed until they lock into place. This operation should be performed with care to avoid damaging the case's polish.

Yes, you can fit quality aftermarket straps on the Datejust 31 278275-0038, provided they strictly comply with the 16-millimetre lug width. A bespoke strap crafted from noble materials (alligator, shell cordovan, premium calf) is not only compatible but can elevate the watch's aesthetics further, allowing you to vary the style according to the occasion without constraints.

The lifespan of a leather strap depends on the material and intensity of use. Quality sartorial alligator offers longevity of 3–5 years with average daily wear, whilst shell cordovan can reach 5–7 years thanks to greater compactness. Calf, especially if thin, has an average lifespan of 2–4 years. Factors such as humidity, exposure to perspiration and frequency of wear influence ageing. Proper maintenance (periodic conditioning) significantly extends the strap's life.