Rolex · Day-Date 36

Strap for Day-Date 36 Everose / Strap / Chocolate

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
Reference118135-0003
FamilyDay-Date 36
MovementRolex caliber 3155 hours, minutes, seconds | date, day | chronometer
CaseRose 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 118135-0003

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Day-Date 36 118135-0003, seen from the bench

The Day-Date 36 represents the contemporary version of the classic Rolex wristwatch with day and date indication. Equipped with the automatic chronometer-certified caliber 3155, it offers hours, minutes, seconds, date, and day of the week functions. The 36mm case features standard 20mm lugs.

Frequently asked questions

What is the exact lug width of the Rolex Day-Date 36 118135-0003?

The lug width of the Rolex Day-Date 36 118135-0003 is 20 millimetres. This dimension represents the space between the case lugs and is specific to this model. Correct measurement is achieved by applying a digital calliper to the inner portion of the lugs, where the strap seats.

Which strap material pairs best with the Day-Date 36 in rose gold?

Alligator represents the natural pairing for rose gold: the geometric texture of the leather suits the watch's constructive order, whilst the patina that develops over time harmonises with the evolution of rose gold. Shell cordovan offers interesting contrast, vegetable-tanned calf leather guarantees sobriety, and rubber straps ensure practicality without sacrificing elegance.

How do I change the strap on the Rolex Day-Date 36 118135-0003?

Strap replacement requires a spring bar tool. Position the watch on a soft surface, insert the tool's tip beneath the lug to compress the internal spring, extract the lug from the case housing, then repeat with the new strap. Contact Casati Milano if you prefer professional assistance.

Can I use a 20mm aftermarket strap on this Day-Date?

Yes, provided the strap has been specifically constructed for the 20mm lug width. Verify that the lugs position without protrusion between the case terminals. Casati Milano straps are bespoke-crafted for this dimension and guarantee perfect visual alignment and mechanical security.

What is the expected lifespan of a leather strap on a daily-wear timepiece?

A quality artisanal leather strap on a daily-worn watch such as the Day-Date 36 has a useful life of 3–5 years before replacement or restoration becomes necessary. Longevity depends on climate, humidity, frequency of wear, and tanning quality. Casati Milano provides straps with an 18-month warranty against manufacturing defects.

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