Rolex · Day-Date 36

Strap for Rolex Day-Date 36 128396TBR

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
Reference128396TBR
FamilyDay-Date 36
MovementRolex caliber 3255 Hours, Minutes, Seconds | Date, Day | Chronometer

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 128396TBR

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 128396TBR, seen from the bench

The Day-Date 36 reference 128396TBR features a 36mm platinum case with 20mm lugs. It is powered by the Rolex Caliber 3255 automatic movement with chronometer certification and indicates hours, minutes, seconds, date, and day of the week. The movement offers a power reserve of approximately 70 hours and incorporates the Parachrom Bleu antimagnetic system.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 128396TBR?

The Rolex Day-Date 36 128396TBR features a lug width of 20 millimetres. This is the spacing between the two case lugs where the strap is inserted. A compatible strap must measure exactly 20mm in width to fit correctly without instability or resistance during installation.

What is the best strap for the Rolex Day-Date 36 128396TBR?

For the Day-Date 36 128396TBR in platinum with diamond-set bezel, we recommend hand-dyed alligator leather with vegetable tanning: the natural texture of the hide dialogues with the cold geometry of the case, and the patina that develops over time amplifies the discrete luxury character. Brown shell cordovan represents the rare-quality alternative, whilst smooth calf or structured rubber offer modern versatility.

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

The Rolex Day-Date 36 128396TBR is equipped with an integrated deployante clasp. To replace the strap, you must remove the deployante from the case (usually with a specialist tool) and fit the new strap by inserting its lugs into the case terminals. For professional execution, Casati Milano performs the service in the atelier with WhatsApp support and 18-month warranty.

Is an aftermarket strap compatible with the 128396TBR?

Yes, any strap with a 20mm lug width is compatible with the Rolex Day-Date 36 128396TBR. Artisanal aftermarket straps often offer superior construction quality compared to genuine Rolex straps: genuine alligator, vegetable tanning, and bespoke craftsmanship that provide a more conscious tactile and visual relationship.

How long does a natural leather strap last on a Rolex?

A natural leather strap with vegetable tanning, if made from quality materials and properly maintained (protected from excessive moisture and direct sunlight), has an average lifespan of 3–5 years of daily wear. The patina that develops is part of the fascinating ageing process. Casati Milano provides an 18-month warranty on manufacturing defects, independent of natural wear.

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