Rolex
Datejust 36 116231-0080— lug 20mm

The Rolex Datejust 36 reference 116231-0080 features a lug width of 20 millimetres. This dimension represents the distance between the pins that attach the strap to the case lugs and is critical for aftermarket strap compatibility. To verify it accurately, position a millimetre ruler perpendicular to the case lugs and measure internally within the pin seat: the fixed value for this model is precisely 20 millimetres. Incorrect measurement of lug width may result in incompatible or misaligned straps.

Strap material selection depends on your aesthetic preference and intended usage. Alligator is the most versatile choice: it offers natural texture with characteristic lozenges, develops golden patina over time, and ages elegantly, complementing the Everose of the case. Vegetable-tanned calf leather represents the traditionalist option, featuring a granular structure that visibly matures, developing dark striations. Shell cordovan is ideal if you seek aesthetic compactness and intrinsic lustre, though it requires regular maintenance. For more casual contexts, natural rubber offers practicality without significant aesthetic compromise on the bimetallic design.

Changing the strap on a Datejust 36 requires instrumental precision. Position the watch on a soft, stable surface, protecting the case from scratches. Use a strap removal tool (small screwdriver for pin removal): insert it into the lateral pin seat, applying controlled pressure until the pin releases. Extract the pin completely and separate the old strap. Align the new strap (20mm lug width) with the lugs, position the pin in the opposite seat, and gently push until fully seated. If this operation is impractical for you, entrust the task to a specialist watchmaker or contact Casati Milano for professional assistance.

Yes, any strap with a certified lug width of 20 millimetres is compatible with the Datejust 36 116231-0080. Compatibility is determined exclusively by lug width, regardless of strap brand or material. However, for optimal aesthetic results, verify that the strap thickness does not exceed 3–4 millimetres in the section connecting to the lugs: excessive thickness may generate visual misalignment or closure difficulties. Milano Straps artisanal straps are constructed according to these specifications, guaranteeing perfect aesthetic and mechanical fit.

Leather strap longevity depends on material quality, tanning method, and frequency of use. High-quality alligator withstands 8–10 years of daily wear, whilst calf leather with vegetable tanning may last 6–8 years whilst developing a desirable patina. Shell cordovan, when properly maintained, can exceed 10 years but requires preventive treatments twice yearly. Factors shortening lifespan include prolonged heat exposure, excessive humidity, and absence of maintenance. The craftsmen at Casati Milano provide personalised maintenance advice with every strap and offer an 18-month warranty on manufacturing defects.