Strap for Datejust 36 Stainless Steel / Diamond / Blue-Diamond / Jubilee

The lug width of the Rolex Datejust 36 126284RBR-0029 is 20 millimetres. This measurement represents the linear distance between the two internal holes in the case where the spring bars of the strap are housed. Verifying this measurement before ordering an aftermarket strap is essential to ensure mechanical compatibility and correct aesthetic proportions.

Alligator remains the most orthodox choice for the two-tone Datejust 36, thanks to its regular texture which does not compete with the dial and its natural colours (brown, black, grey) that amplify elegance. Italian calf leather offers a contemporary alternative with superior softness, while vegetable tanning permits natural patina development over time. Shell cordovan represents a premium option for those desiring superior construction density and balanced lustre.

Strap replacement requires the use of a spring bar tool: insert the flat blade into the spring bar hole (small button inside the lugs) to compress the shaft, then slide the old strap outward. Reverse the procedure with the new strap, ensuring the ends of the spring bars click securely into the holes. If you prefer to avoid risk, Casati Milano offers strap change service in their atelier.

Yes, absolutely. A quality aftermarket strap (alligator, calf leather, shell cordovan with stainless steel fittings) does not compromise the COSC certification or warranty of the watch, provided the lug width is precisely 20 millimetres and the case is not modified. Milanostraps offers artisanal straps compatible with standard Rolex spring bars.

A quality artisanal alligator or calf leather strap lasts approximately 3-5 years of daily use, with variability depending on sun exposure, humidity and cleaning frequency. Vegetable-tanned leather tends to age visually more rapidly (6-12 months) but maintains structural integrity for 4-6 years. Casati Milano offers an 18-month warranty against manufacturing defects with post-warranty restoration options available.