Rolex
Datejust 36 116231-0105— lug 20mm

The Rolex Datejust 36 116231-0105 is fitted with 20-millimetre lugs. This is the standard lug width for Datejust 36 models produced from 2009 onwards. The correct measurement is taken by positioning a digital calliper on the interior surface of the lug, from inner wall to inner wall, without touching the outer bezel edge. Earlier models prior to 2009 utilised 18-millimetre lugs, so it is essential to verify this dimension before purchasing a compatible strap.

For the two-tone Datejust 36 in rose gold and stainless steel, alligator leather represents the most coherent choice: the natural grain of the skin dialogues with the fluted bezel in rose gold. A dark brown or warm burgundy alligator amplifies the luminosity of the bi-metallic case. Noble alternatives include shell cordovan from the horse shell, with its deep lustre and natural rigidity, or smooth box calf for those preferring simplified maintenance and a minimalist aesthetic. Vegetable-tanned leather guarantees a patina that evolves over time.

Changing the strap on the Datejust 36 116231-0105 requires a specific tool: a spring bar tool or a dual-pronged spring bar remover. Position the watch on a stable support, gently lift the strap on one side to access the elastic pins positioned within the lugs, then extract the pin with steady pressure. Repeat the operation on the opposite side. Install the new strap by reversing the procedure. This operation should be performed on a soft surface (such as a cloth) to avoid scratching the case. If uncertain, contact a specialist watchmaker.

Yes, any strap with a 20-millimetre lug width is compatible with the Datejust 36 116231-0105. The decisive parameter is the lug width, not the strap manufacturer. Quality artisanal aftermarket straps offer greater aesthetic customisation compared to original Rolex bracelets: they are available in a wide range of materials (alligator, calf, shell cordovan, technical rubber) and finishes. Always verify that the lug width is exactly 20 millimetres measured internally.

The lifespan of a leather strap depends on the material, frequency of use, and maintenance. A quality artisanal alligator or shell cordovan strap, worn daily, offers a lifespan of 4-6 years before requiring replacement. Box calf, more vulnerable to abrasion, typically lasts 2-3 years. Leather fears excessive moisture and prolonged direct sunlight exposure. Periodic maintenance—cleaning with a dry cloth, gentle conditioning with watch-specific leather creams—significantly extends the strap's longevity. Vegetable-tanned straps develop a patina that, whilst modifying the original appearance, increases the structural resilience of the leather.