Rolex · Day-Date 36

Strap for Day-Date 36 Yellow Gold Fluted / Oyster / 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
Reference118238-0200
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 118238-0200

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 118238-0200, seen from the bench

The Rolex Day-Date 36 model 118238-0200 is a 36mm solid yellow gold watch featuring the caliber 3155 automatic movement with 48-hour power reserve and COSC chronometer certification. The champagne dial showcases applied baton indices in gold, with day and date display via quickset mechanism. This dress watch represents the modern evolution of the 1956 original, the first wristwatch to display both day and date, combining technical precision with understated elegance through its fluted bezel and applied gold hands.

Frequently asked questions

What is the exact lug width of the Rolex Day-Date 36 118238-0200?

The Rolex Day-Date 36 reference 118238-0200 features a lug width of precisely 20 millimetres. This specification is unique to the Day-Date 36 models of this generation and must be measured perpendicularly across the case lugs. A compatible strap must have exactly 20 mm width at the attachment points.

Which type of strap is most recommended for the Day-Date 36 118238-0200?

For the Day-Date 36 in yellow gold (reference 118238-0200), natural alligator is the most traditional and refined choice, particularly in black or cognac tones. Shell cordovan represents the pinnacle for longevity and patina development over time. Vegetable-tanned calfskin offers practicality and structure while maintaining formal elegance. All these materials enhance the richness of the gold case without competing visually.

How do you change the strap on a Day-Date 36 118238-0200?

Changing the strap on a Day-Date 36 118238-0200 requires a spring bar tool to extract the metal pins from the case lugs. It is advisable to consult a professional watchmaker or artisanal atelier such as Casati Milano to prevent damage to the case. The process is straightforward but requires precision and proper tools.

Can an aftermarket strap be mounted on a Rolex Day-Date 36 118238-0200?

Yes, the Day-Date 36 118238-0200 accepts aftermarket straps with a 20 mm width specification. It is essential to verify that the strap is measured exactly at 20 mm at the lug attachment points. A premium artisanal strap from Casati Milano guarantees full compatibility and significantly enhances the tactile and aesthetic experience of the timepiece.

What is the average lifespan of a leather strap for the Day-Date 36 118238-0200?

A high-quality leather strap, such as those crafted from natural alligator or shell cordovan, typically lasts 3-5 years with daily use and proper maintenance. Alligator is more delicate than shell cordovan, which can last 5-7 years. Longevity depends on sun exposure, humidity levels and frequency of use. Casati Milano provides an 18-month warranty on manufacturing defects and offers maintenance advice to extend the strap's lifespan.

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