Rolex · Day-Date 36

Strap for Day-Date 36 Everose Gold / Diamond / Brown Ombré-Diamond / 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
Reference128345RBR-0041 (aka: M128345RBR-0041)
FamilyDay-Date 36
MovementRolex caliber 3255 hours, minutes, seconds | date, day | chronometer
Year2019
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

All Rolex spring barsOpen →

Straps for the Day-Date 36 128345RBR-0041 (aka: M128345RBR-0041)

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 128345RBR-0041 (aka: M128345RBR-0041), seen from the bench

The Day-Date was introduced in 1956 as the first automatic wristwatch to display the day and date in full. It is equipped with the automatic caliber 3255, certified chronometer, with hour, minute, second, date and day indications. 36mm case with 20mm lugs.

Frequently asked questions

What is the exact lug width of the Rolex Day-Date 36 128345RBR-0041?

The lug width of the Rolex Day-Date 36 128345RBR-0041 is precisely 20 millimetres. This dimension is specific to the compact Day-Date collection and is incompatible with 19mm or 21mm straps. Rolex's engineering precision permits no deviation: verification of the measurement between the lug pins is essential before ordering an aftermarket strap.

Which strap is most suitable for the Rolex Day-Date 36 128345RBR-0041 in rose gold?

For the 128345RBR-0041 in rose gold, alligator leather represents the superior formal choice, with its natural grain amplifying the perception of luxury. Vegetable-tanned calf offers a resilient, versatile daily alternative. Shell cordovan—horse leather of exceptional density—develops a multistratified patina over time. Vintage rubber enables an elegant-casual transition for summer contexts.

How is the strap changed on a Rolex Day-Date 36?

Position the watch case downward on a soft surface. Using a spring bar removal tool, compress the lateral attachment pin, gently lifting the bracelet or strap from the first lug. Repeat on the second side. Insert the new strap by aligning the pins with the lugs and press until the locking click is felt. For delicate operations, professional assistance from an authorised dealer or specialised atelier is recommended.

Are aftermarket straps compatible with the Rolex Day-Date 36 128345RBR-0041?

Yes, aftermarket 20mm straps are fully compatible with the 128345RBR-0041, provided they meet identical engineering precision to Rolex components. Specialised artisanal ateliers, such as Casati Milano, manufacture custom-formed straps that respect the geometric tolerances of the Rolex case, delivering aesthetics and durability comparable to official products.

What is the durability of a leather strap for the Rolex Day-Date 36?

A high-quality leather strap, properly maintained, typically endures 4–7 years of daily wear, with variations due to leather type and environmental conditions. Alligator, owing to its fibrous density, tends to offer superior durability. Shell cordovan, horse leather, frequently reaches 10 years of functional resistance. Vegetable-tanned calf requires greater maintenance but may endure 5–8 years with appropriate care. Exposure to moisture, sunlight, and perspiration accelerates ageing; protecting the strap when unworn extends operational lifespan.

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