Rolex
Datejust 36 116201-0105— lug 20mm

The Rolex Datejust 36 116201-0105 features a lug width of 20 millimetres. This measurement refers to the internal distance between the two horizontal pins that connect the strap to the case. It is a critical dimension: a strap of 19 or 21 millimetres will not be compatible. To verify it accurately, use a digital calliper, measuring from wall to wall of the lug itself.

The optimal strap depends on intended use and aesthetic preference. For formal occasions, Nile crocodile with compact grain is the reference standard; vegetable-tanned calf leather offers everyday elegance and develops natural patina over time; shell cordovan introduces a unique biographical component. The primary rule: the leather should echo the tone of Everose gold (warm brown, cognac) or contrast elegantly (black with steel). A deployante or Rolex-style folding clasp in steel or rose gold completes the pairing.

Rotate your watch dial-side down on a soft surface (cloth pad). Locate the horizontal spring bars at both lug ends. Using a thin spring bar tool, gently press the pin inward from the outside, releasing the internal spring. Remove the old strap. Insert the new strap (always 20 millimetres) by aligning it with the lug holes, then press the pin back until it clicks into place. Verify that the strap is securely locked and sits flush with the case.

Yes, absolutely. High-quality aftermarket straps—crafted by specialised ateliers such as Casati Milano—are fully compatible provided they respect the 20-millimetre lug width specification. A bespoke strap offers advantages over the original: unlimited leather choice (crocodile, shell cordovan, vegetable-tanned calf), customisable colour, clasp options (deployante, standard buckle), and ergonomic adjustment to your wrist. Premium aftermarket straps are equivalent to or superior in longevity compared to original Rolex straps.

Durability depends on material quality, usage intensity, and maintenance discipline. A high-grade crocodile strap lasts 4–6 years with daily wear; shell cordovan can reach 8–10 years because the fibre density is superior; vegetable-tanned calf offers a mean lifespan of 3–5 years but develops a compelling patina progressively. Critical factors: humidity and perspiration exposure, frequency of wear, regular maintenance (gentle cleaning with damp cloth, conditioning with natural wax every 6–8 months). A Casati Milano strap includes an 18-month warranty against manufacturing defects, covering stitching, leather, and clasp components.