Rolex
Datejust 36 116231-0093— lug 20mm

The Rolex Datejust 36 116231-0093 features a 20-millimetre lug width. This dimension is standard for modern Datejust 36 models and is essential to verify before purchasing a replacement strap. You can measure accurately by positioning a digital calliper between the internal lug attachments, parallel to the bezel. A measurement error would result in an incompatible strap purchase.

There is no single definitive answer, but three exceptional options stand out: vegetable-tanned alligator in chocolate brown for formal elegance; satin-finished calf in navy blue for everyday versatility; shell cordovan for those seeking a personal signature and unique ageing character. Your choice depends on predominant usage context and aesthetic preference regarding the natural patina development over time.

The process requires a specific spring bar tool and careful technique. Place the watch on a soft surface (felt mat), position the tool under the lug attachment to compress the internal spring, and withdraw the bar with a smooth motion. Repeat on the opposite side, then insert the new strap by aligning the holes with the case protrusions. If you lack experience, consult an authorised Rolex dealer or trusted watchmaker to avoid case scratches.

A high-quality artisanal aftermarket strap poses no risk to the watch if manufactured to correct tolerances (20-millimetre lug width). Danger exists only with counterfeit or poor-quality products, where material degradation or inadequate leather rigidity may stress the lug attachments. Casati Milano straps are bespoke-made and certified with an 18-month production defect warranty.

Longevity varies by leather type, usage and environmental conditions. A vegetable-tanned alligator or cordovan, with proper maintenance (protection from water and direct sunlight), maintains structural integrity for 5–8 years; satin calf, being softer, requires replacement more frequently—approximately every 3–5 years. Ageing is natural and desirable: the developing patina is the signature of authentic ownership. Gentle oiling every 2–3 years with leather-specific balms will extend lifespan.