Rolex · Day-Date 36

Strap for Day-Date 36 White Gold Fluted / President / Grey Roman

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter36 mm
Reference118239-0082
FamilyDay-Date 36
MovementRolex caliber 3155 hours, minutes, seconds | date, day | chronometer
CaseWhite Gold

Recommended spring bar

Spring bars Rolex Daytona 116520 — 20mm steel

Technical match for lug width and diameter · lug 20 mm · Ø 1.5 mm · closed lugs

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Straps for the Day-Date 36 118239-0082

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 118239-0082, seen from the bench

The Rolex Day-Date 36 reference 118239-0082 is a white gold watch featuring a 36 mm case housing the caliber 3155 movement with COSC certification. The fluted bezel and champagne-dial design exemplify the classic President collection launched in 1956 as the first wristwatch with dual windows for day and date. Lug width is 20 mm, accommodating quality leather straps and deployant buckles while maintaining visual balance.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 118239-0082?

The lug width of the Rolex Day-Date 36 reference 118239-0082 is 20 millimetres. This measurement represents the distance between the two spring bar holes (barrel-shaped lugs) that connect the strap to the case. A 20-millimetre lug width is considered a classic standard for watches in this category and ensures broad compatibility between quality straps whilst maintaining ideal visual proportions for a 36-millimetre case.

What type of strap is recommended for the Day-Date 36 118239-0082 in white gold?

For a Rolex Day-Date 36 118239-0082 in white gold, the most suitable materials are alligator (with fine grain and natural patina), shell cordovan (for caramel tones and dramatic ageing) and vegetable-tanned calf leather (for tactile sensitivity and extraordinary character development over time). French or Swiss alligator remains the traditional choice: its regular grain and ability to adapt to wrist movement make it ideal for this case. Avoid standard rubber and elastic straps; instead choose a high-density FKM technical rubber with hand-finished ridges.

How do you change the strap on a Rolex Day-Date 36 118239-0082?

Changing the strap on a Day-Date 36 118239-0082 requires specific tools: a spring bar tool (strap change tool) and a clean, flat surface. Position the watch with the case facing upwards, locate the small holes beside the barrels (spring bar holes), insert the spring bar tool into one of the holes to release the pin, remove the old strap, insert the new strap by aligning it with the barrels and release the spring bar tool until it clicks into place. Some prefer to entrust this operation to a specialist strap specialist: Casati Milano's Milan atelier service also provides this consultation and maintenance.

What is the difference between an aftermarket strap and an original Rolex bracelet?

The original Rolex bracelet for the Day-Date 36 118239-0082 is made of 18-carat white gold, with soldered links and mirror-polished finishing, integrated end links and Rolex fold-over safety clasp. An aftermarket quality strap (alligator, shell cordovan, calf) offers a completely different aesthetic, with superior tactile sensitivity and the ability to develop patina over time. An artisanal strap also guarantees full customisation: choice of leather, colour, clasp type (deployante, ardillon, etc.) and construction details (stitching, edge, finishing) according to your preferences. The quality of a Casati Milano artisanal strap is comparable to the original bracelet in craftsmanship, but with an aesthetic and tactile diversity that only natural leather can offer.

How long does a quality leather strap last on a Rolex Day-Date 36?

A high-quality leather strap (alligator, shell cordovan, vegetable-tanned calf) on a Rolex Day-Date 36 typically lasts between 2 and 4 years with moderate daily use. Longevity depends on several factors: leather quality, frequency of use, exposure to the elements, care and maintenance. A premium leather develops natural patina in the first year and maintains its structural integrity for much longer, albeit with visible signs of wear. With occasional use (2–3 times per week), the same leather can last 5–6 years. Casati Milano offers an 18-month warranty against manufacturing defects and recommends periodic maintenance: cleaning with a damp cloth, gentle drying and conditioning with leather-specific creams every 6–12 months will significantly extend the life of your strap.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only