Rolex · Day-Date 36

Strap for Day-Date 36 Yellow Gold Diamonds / President Diamonds / Champagne Computer

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
Reference118388-0033
FamilyDay-Date 36
MovementRolex caliber 3155 Hours, Minutes, Seconds | Date, Day | Chronometer
CaseYellow 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 118388-0033

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 118388-0033, seen from the bench

The Day-Date was introduced in 1956 as the first wristwatch to display the day and date simultaneously. It is powered by the self-winding Caliber 3155 with chronometer certification and dual day-date indication. The 36mm case has 20mm lugs, and it is available exclusively in precious metals.

Frequently asked questions

What is the exact lug width of the Rolex Day-Date 36 118388-0033?

The lug width of the Rolex Day-Date 36 reference 118388-0033 is 20 millimetres. This width corresponds to the space between the articulation pins on the case and represents the specific standard for this model in 36mm version. Always verify manually with a calliper before ordering an aftermarket strap.

Which strap is recommended for the Day-Date 36 in yellow gold 118388-0033?

For the Rolex Day-Date 36 in yellow gold 118388-0033, premium alligator straps (cognac tones, dark brown, burnt terracotta), vegetable-tanned calf leather, or shell cordovan for superior durability are ideal. Yellow gold requires noble materials that develop harmonious patina over time. Low-quality synthetic materials are discouraged.

How do you change the strap on the Rolex Day-Date 36 118388-0033?

Changing the strap on the Rolex Day-Date 36 requires a quality watch-grade spring bar tool. Position the watch on a soft support, use the tool to push the elastic pin from the opposite side of the buckle, and gently slide the old strap away. Insert the new strap ensuring the leather holes align perfectly with the pins before releasing pressure.

Is an aftermarket strap compatible with the Rolex Day-Date 36 118388-0033?

Yes, any quality strap constructed with 20mm lug width is mechanically compatible with the Day-Date 36 118388-0033. Compatibility requires that the strap be made from noble leather or material, the width corresponds exactly to 20mm, and the construction allows adjustment to Rolex pins without forcing. Artisanal Italian straps guarantee superior construction standards.

How long does a leather strap last on a Rolex Day-Date 36 with daily wear?

A quality leather strap (alligator, calf, shell cordovan) on the Rolex Day-Date 36 with daily wear has an average lifespan of 5–7 years before showing significant wear signs. Longevity depends on environmental factors (humidity, sun exposure), cleaning frequency, and initial thickness. Shell cordovan and vegetable-tanned calf straps tend to last longer than other bovine leathers due to superior fibre structure.

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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