Rolex · Day-Date 36

Strap for Day-Date 36 Everose Gold / Fluted / Paved-Rainbow / President-Diamond

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
Reference128235-0040 (aka: M128235-0040)
FamilyDay-Date 36
MovementRolex caliber 3255 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 128235-0040 (aka: M128235-0040)

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 128235-0040 (aka: M128235-0040), seen from the bench

The Rolex Day-Date 36 reference M128235-0040 combines a 36 mm Everose gold case with caliber 3255, a new-generation manufacture movement featuring the Chronergy oscillator offering 15% improved energy efficiency and 70-hour power reserve. The lapis lazuli dial with gold indices displays hours, minutes, seconds, date, and day with precise readability. Certified COSC chronometer with Rolex internal verification ensures accuracy of -2/+2 seconds daily. Lug width: 20 mm.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 128235-0040?

The lug width of the Rolex Day-Date 36 128235-0040 is 20 mm. This measurement is taken using a digital calliper positioned between the two lugs at their base. It is the critical specification for selecting any aftermarket strap compatible with this reference.

What is the best strap for the Rolex Day-Date 36 128235-0040 in rose gold?

For the Day-Date 36 in rose gold, an alligator strap in vegetable-tanned leather represents the most coherent choice with the watch's formal register. Warm tones such as burgundy, cognac or dark tobacco complement the Everose gold case. Shell cordovan is the preferred alternative for those seeking a material that develops a distinctive patina over time, whilst smooth calf leather offers everyday versatility.

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

The strap on the Rolex Day-Date 36 is removed using a spring bar tool to release the spring bars between the lugs. It is advisable to work on a soft surface to protect the rose gold case from scratches. Alternatively, any qualified watchmaker or specialist atelier can perform the swap in a matter of minutes.

Are there aftermarket straps compatible with the Rolex Day-Date 36 128235-0040?

Yes. The Rolex Day-Date 36 128235-0040 features 20 mm lugs with a slightly curved profile: straps with curved ends are required to ensure correct fitment against the case. Milanostraps.it offers a curated selection of handcrafted 20mm straps in alligator, calf leather, shell cordovan and other premium materials, all compatible with this reference.

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

The lifespan of a leather strap depends on material quality and frequency of wear. A high-quality vegetable-tanned alligator strap, properly maintained, retains its structural and aesthetic integrity for 3 to 5 years under regular use. The keeper and buckle area experience the greatest wear: periodic replacement of the keeper significantly extends the strap's overall life. Casati Milano backs its 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