Rolex · Day-Date 36

Strap for Day-Date 36 Yellow Gold / Diamond / Turquoise / 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
Reference128348RBR-0038 (aka: M128348RBR-0038)
FamilyDay-Date 36
MovementRolex caliber 3255 hours, minutes, seconds | date, day | chronometer
Year2019
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

All Rolex spring barsOpen →

Straps for the Day-Date 36 128348RBR-0038 (aka: M128348RBR-0038)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Day-Date 36 128348RBR-0038 (aka: M128348RBR-0038), seen from the bench

The Day-Date was introduced in 1956 as the first wristwatch to display the day and date spelled out. It features the automatic caliber 3255 with chronometer certification, functions for hours, minutes, seconds, date and day of the week. 36mm case with 20mm lugs.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 128348RBR-0038?

The lug width is 20 mm (stem to stem). Measure by positioning a digital calliper on the inner wall of the upper stem to the lower one, without compressing the case. This specification is specific to the Day-Date 36 and ensures proportional balance between case and strap.

Which type of strap is most recommended for the Day-Date 36 in yellow gold?

For the yellow gold case, straps in natural alligator, shell cordovan in amber tones, or vegetable-tanned calf leather are the most harmonious choices. Alligator and cordovan develop a rich patina that dialogues with the natural ageing of gold. Vegetable-tanned calf offers architectural sobriety with a satin texture that matures over time.

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

The change requires the use of a specific tool (spring bar removal tool or pin removal tool). Position the watch with the case facing downward, place the tool under the lug, and gently push the lateral pin to remove the spring. Once the original strap is removed, insert the new one by aligning it with the stems and reinserting the pins with uniform pressure. It is advisable to entrust this to a professional to avoid damaging the case.

Can I use an aftermarket strap with my Day-Date 36 128348RBR-0038?

Yes, any strap with a 20 mm lug width is compatible. Handcrafted straps offer the opportunity to customise material, colour and finish in a way that is consistent with your style. Verify that the strap has stems of the correct width and that the springs are of good quality to ensure safe and lasting wear over time.

How long does a leather strap last on a watch worn daily?

Durability depends on the material, tanning method and intensity of use. An alligator or shell cordovan strap with vegetable tanning, worn daily, maintains structural integrity for 3-5 years. The leather develops a natural patina, but visible deterioration begins when the fibre starts to yield. Rubber or NATO straps tend to last longer (5-8 years), whilst more fragile leather may require replacement after 2-3 years of intense use.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only