Rolex · Day-Date 36

Strap for Day-Date 36 Yellow Gold - Diamond / Bright Green - 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
Reference128348RBR-0078
FamilyDay-Date 36
MovementRolex caliber 3255 hours, minutes, seconds | date, day | chronometer
Year2024
CaseYellow 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 128348RBR-0078

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 128348RBR-0078, seen from the bench

The Day-Date was introduced in 1955 as the first wristwatch to display the day and date in full. It is equipped with the automatic 3255 caliber with chronometer certification and indication of hours, minutes, seconds, date and day of the week. The 36mm case features 20mm lugs.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 128348RBR-0078?

The lug width of the Rolex Day-Date 36 128348RBR-0078 is 20 mm. This measurement, taken internally between the two lugs at the point where the strap meets the case back, is the definitive parameter for selecting any compatible replacement strap.

What is the best strap for the Rolex Day-Date 36 128348RBR-0078 in yellow gold?

For the Day-Date 36 in yellow gold, an alligator strap with vegetable tanning in tobacco, chocolate or bordeaux tones is the most coherent choice given the watch's formal register. Shell cordovan offers a premium alternative with superior wear resistance. For sporting or marine environments, vulcanised rubber provides reliability and comfort without compromising the overall aesthetic.

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

Changing the strap on a Rolex Day-Date 36 requires a fine-tipped spring bar tool. The spring bars have a standard diameter of 1.8 mm. Care must be taken to avoid scratching the yellow gold case: plastic jaw protectors and a cushioned watch holder are strongly recommended during the procedure.

Are there aftermarket straps compatible with the Rolex Day-Date 36 128348RBR-0078?

Yes. Any strap with a 20 mm lug end tapering to 16 or 18 mm is physically compatible with the Day-Date 36. Milanostraps.it offers a curated selection of handcrafted 20 mm straps in premium leather, with thicknesses and finishes calibrated for Oyster yellow gold lugs. The Casati Milano atelier also produces fully bespoke straps to order.

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

The lifespan of a leather strap depends on the material, frequency of use, and exposure to perspiration and moisture. A quality vegetable-tanned alligator strap, properly cared for and stored correctly, will retain its structural and aesthetic integrity for 3 to 5 years with regular use. Shell cordovan, owing to the density of its fibrous structure, can exceed 5 to 7 years. Regular exposure to water will significantly reduce these figures.

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