Rolex
Datejust 36 126234-0017— lug 20mm

The lug width of the Rolex Datejust 36 126234-0017 is 20 mm. This measurement represents the distance between the two attachment points on the case. It is essential to measure this dimension before purchasing a compatible strap to avoid installation errors. A 20mm strap ensures perfect alignment with the case lugs and secure fitting.

For a Datejust 36 in white gold and stainless steel, an alligator strap in cognac, barolo, or warm sand is the ideal pairing. These natural materials develop a patina that dialogues beautifully with the two-tone case. Alternatively, vegetable-tanned calf leather in châtaigne (chestnut brown) offers elegance and versatility. Avoid neutral dark tones or absolute grey: they create an aesthetic disconnect with the logic of the mixed metal composition.

Strap replacement requires a specific tool: a spring bar removal tool. Locate the two small holes on the case lugs, insert the tool to release the spring bar, and the strap will be freed from the case. Repeat for both sides. When installing the new strap, align the spring bars and press until you feel the click of closure. If you are unfamiliar with this procedure, entrust the operation to a certified watchmaker to avoid scratching the case.

Yes, provided it respects the 20mm lug width and is constructed with precise industrial tolerances. A quality aftermarket strap maintains the same standards of robustness and finish as the original Rolex version, with the advantage of offering a much wider range of colours and materials (alligator, calf, shell cordovan). Always verify the strap specifications and compatibility reviews before purchase.

The lifespan of a leather strap depends on three factors: material type (alligator resists longer than calf), frequency of use (a strap worn daily lasts 3–5 years), and environmental care (exposure to direct sunlight and humidity accelerates aging). A high-quality alligator with vegetable tanning can withstand 5–7 years of regular use. Vegetable-tanned calf typically lasts 3–4 years. To extend longevity, avoid exposure to heat sources, apply strap-specific conditioners every 3–4 months, and remove the watch at night to allow the strap to dry completely.