Rolex · Day-Date 36

Strap for Day-Date 36 Platinum - Fluted / Ice Blue - Baguette / President

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
Reference128236-0009
FamilyDay-Date 36
MovementRolex caliber 3255 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 128236-0009

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 128236-0009, seen from the bench

The Day-Date 36 represents the contemporary version of the classic Rolex watch with day and date indication. It is equipped with the automatic Caliber 3255 with chronometer certification and displays hours, minutes, seconds, date and day of the week. The 36mm case features 20mm lugs for the strap.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 128236-0009?

The lug width of the Rolex Day-Date 36 128236-0009 is 20 millimetres. This measurement represents the exact distance between the case lugs and determines strap compatibility. To verify the lug width, measure the perpendicular distance between the inner edge of one lug and the inner edge of the opposite lug using a rigid ruler. The 128236-0009, like all contemporary Day-Date 36 models, exclusively accepts 20mm straps.

What is the best strap for the Rolex Day-Date 36 128236-0009 in platinum?

The optimal strap for the 128236-0009 is alligator with vegetable tanning, in natural white or deep brown tonalities. Alligator develops a symmetrical grain pattern that engages organically with platinum's natural patina. Shell cordovan represents an equally excellent alternative, offering intrinsic luminosity and superior mechanical resistance. For a contemporary interpretation, vegetable-tanned calf leather in tortora grey provides minimalist refinement. The selection depends on usage context and personal chromatic preferences.

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

To change the 128236-0009 strap, position the timepiece on a soft pad with the case facing upward. Employ a dedicated tool (spring bar tool) to gently compress the internal fixing springs (spring bar) located within the lugs. Once compressed, remove the old strap by applying light lateral pressure. Insert the new 20mm strap, aligning the pins with the lugs, release the spring mechanism, and verify secure fastening. Avoid sharp implements that could scratch the platinum case.

Is the Rolex Day-Date 36 128236-0009 compatible with aftermarket straps?

Yes, the 128236-0009 is fully compatible with premium aftermarket straps provided they feature 20mm lug width and standard spring bar fastening systems. Artisanal straps from specialised manufacturers, crafted in alligator, shell cordovan, or vegetable-tanned calf, interface seamlessly with the case lugs. Ensure the strap is specifically engineered for 20mm lug width and utilises superior-quality spring bars to guarantee enduring compatibility and security.

What is the lifespan of a leather strap on a Rolex Day-Date 36?

A premium leather strap (alligator, shell cordovan, vegetable-tanned calf) typically endures between 5 and 10 years under ordinary maintenance conditions. Longevity depends on usage frequency, solar exposure, ambient humidity, and care protocols. Vegetable tanning produces a natural patina that improves over time, distinguishing itself from synthetic tannage. Avoid prolonged direct contact with fresh water, shield from excessive heat sources, and periodically apply a natural conditioner containing plant-based oils. A well-maintained strap develops a patina of considerable character, narrating its biographical account upon the wrist.

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