Strap for Day-Date 36 White Gold Fluted / Oyster / Silver Computer

The lug width of the Rolex Day-Date 36 118239-0143 is 20 millimetres. This dimension represents the distance between the lug attachment points on the case. You can verify this measurement using a digital calliper by measuring the internal space between the two upper or lower lugs on the case. It is critical to verify this measurement before ordering a strap, as an incorrect lug width would not fit properly and would create unwanted play between the strap and case.

For this white gold reference, alligator leather represents the most balanced choice from both aesthetic and functional perspectives. Its natural grain texture creates an elegant visual dialogue with the polished white gold. Alternatively, calf leather offers a sober patina that evolves over time, whilst shell cordovan delivers unparalleled tactile density and natural lustre. The choice depends on personal preference and the intended context of use for the watch.

Strap replacement requires a dedicated strap removal tool to extract the lug pins. Position the watch on a soft surface, identify the small lateral holes on the lugs, insert the removal tool into the holes and push gently to slide the pin out. Once extracted, the strap will separate from the case. To install a new strap, align the holes on the back of the strap with the lugs and reinsert the pins until they click into place. If you lack experience, consult a professional watchmaker or jeweller.

Yes, any strap with a 20-millimetre lug width is compatible with this reference. Compatibility is determined exclusively by lug width, not by the strap manufacturer's brand. However, it is essential to verify that the strap was specifically constructed for this lug width: a 18mm or 22mm strap will not fit correctly into the case lugs.

The lifespan of a leather strap varies depending on the material and frequency of wear. A quality artisanal alligator or calf leather strap, worn daily with proper maintenance, typically lasts between 3 and 5 years. Factors such as sun exposure, humidity, perspiration and frequency of wear accelerate ageing. A shell cordovan strap, owing to its superior density, may last 5-7 years. Regular maintenance with dedicated balms significantly extends the functional lifespan.