Rolex · Day-Date 36

Strap for Day-Date 36 Platinum Diamonds / President / Silver Diamonds

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
Reference118346-0024
FamilyDay-Date 36
MovementRolex caliber 3155 hours, minutes, seconds | date, day | chronometer
CasePlatinum

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 118346-0024

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 118346-0024, seen from the bench

The Rolex Day-Date 36 Platinum Diamonds model 118346-0024 features a 36 mm platinum case paired with the calibre 3155 automatic movement, which incorporates the Chronergy escapement and Parachrom hairspring for enhanced precision and magnetic resistance. The lug width measures 20 mm, designed to accommodate straps with proper structural thickness while maintaining wrist elegance. This reference represents the President collection's refined engineering standards.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 118346-0024?

The lug width of the Rolex Day-Date 36 118346-0024 is 20 millimetres. This measurement is specific to President models of medium dimensions and represents the internal distance between the two casing attachment points. Any compatible strap must be constructed precisely to this width to ensure accurate fit and stability.

Which strap is recommended for the Rolex Day-Date 36 platinum?

For the Day-Date 36 platinum, black or dark brown alligator represents the most coherent choice with the model's refinement. Alternatively, burgundy box calf or shell cordovan offer excellent durability and a fascinating aesthetic patina over time. Selection depends on daily wear and personal colour preferences.

How do I change the strap on the Day-Date 36 118346-0024?

Strap replacement requires the use of a spring bar tool to open the small elastic pins connecting the strap to the casing lugs. Operation should be performed on a clean surface to prevent accidental loss of the springs. Many prefer to entrust this operation to a professional to ensure absence of scratches on the casing.

Can I use aftermarket straps on this Rolex?

Yes, 20mm aftermarket straps are fully compatible with the Day-Date 36 118346-0024, provided they are constructed to rigorous manufacturing standards. Straps produced by specialised ateliers such as Casati Milano guarantee quality equal to or superior to OEM straps, with premium materials and impeccable finishing. Compatibility is absolute in dimensional terms.

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

A high-quality leather strap, crafted in alligator, box calf or shell cordovan, has an average lifespan of 3-5 years with daily use and proper maintenance. Wear depends on factors such as frequency of use, humidity exposure and maintenance. Some noble materials such as shell cordovan improve over time, developing a desirable patina.

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