Rolex
Day-Date 36 118348-0033— lug 20mm

The Rolex Day-Date 36 reference 118348-0033 requires a strap with a 20-millimetre lug width. This measurement is specific to 36-millimetre Day-Date models and is compatible exclusively with straps fabricated for this width. The measurement is taken between the two metal pins at the case endings.

For the Day-Date 36 118348-0033 in 18-carat yellow gold, alligator leather remains the most coherent choice: its natural scale pattern dialogues perfectly with the case finish. Alternative options of prestige include mother-of-pearl calf for business casual contexts and shell cordovan for collectors seeking pronounced aesthetic character. Vegetable-tanned leather develops patina that accompanies the natural ageing of gold.

Changing the Day-Date 36 strap requires a spring bar tool or specialised extractor to remove the pins (also called "strap pins") that secure the original strap. The pins must be extracted carefully from the lateral cavities on the case and subsequently reinserted into the new strap, aligning them precisely with the two lugs. It is advisable to proceed on an illuminated, flat surface to prevent damage to the pins or lug threads.

Yes, any strap fabricated with a 20-millimetre lug width is compatible with the Day-Date 36 118348-0033, regardless of the manufacturer. The essential requirement is verifying that the width is exactly 20mm and that the artisanal construction quality can sustain the luxury context of the timepiece. Custom-fabricated straps also permit selection of colours and materials not originally offered by Rolex.

A quality artisanal alligator or calf strap lasts an average of 3-5 years with daily wear, depending on climate, perspiration and frequency of sun exposure. Vegetable-tanned leather tends to age visually more rapidly but remains functionally intact longer. Periodic maintenance—cleaning with damp cloth and application of leather-specific balms—can extend durability to 6-7 years. Signs of wear (discolouration, micro-tears) are considered natural patina in high-quality artisanal straps.