Rolex
Datejust 36 116231-0062— lug 20mm

The Rolex Datejust 36 ref. 116231-0062 features a 20-millimetre lug width. This measurement corresponds to the internal space between the watch case lugs and uniquely determines aftermarket strap compatibility. The measurement should be verified by positioning a digital calliper perpendicular to the lug space at the point of maximum depth.

There is no absolute 'best', but rather logical choices. Alligator is ideal for those rotating multiple straps: parallel grain, minimal maintenance, replacement every 3–4 years. Shell cordovan suits those desiring patina and emotional depth, yet requires rain protection. Vegetable-tanned calf offers classical aesthetics and superior breathability. The bicolour Everose and stainless steel case accommodates all options without aesthetic conflict.

Removing the strap requires a Spring Bar Tool: insert the flat tip into the lug slot, press gently to release the internal spring mechanism of the bar, then extract the bar from the lugs. Reverse the procedure to install the new strap, ensuring the bar seats fully within both lugs. If uncertain, consult a certified horologist.

Yes, provided it is manufactured with the correct 20mm lug width and precise manufacturing tolerances. High-quality artisanal aftermarket straps—such as those produced by Casati Milano—do not compromise case integrity or movement functionality. The manufacturer's warranty covers defects in leather and craftsmanship.

A quality alligator strap lasts approximately 3–5 years of daily wear, if exposed to moderate humidity and rain protection. Shell cordovan, more resilient and dense, may last 5–7 years. Calf leather is more delicate, lasting 2–4 years. Lifespan depends on climate conditions, frequency of wear and proper maintenance (drying after moisture exposure, occasional conditioning with specialist products).