Rolex · Day-Date 36

Strap for Day-Date 36 Yellow Gold Diamonds / President Diamonds / Black Diamonds Rubies

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
Reference118348-0149
FamilyDay-Date 36
MovementRolex caliber 3155 Hours, Minutes, Seconds | Date, Day | Chronometer
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 118348-0149

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Day-Date 36 118348-0149, seen from the bench

The Rolex Day-Date 36 model 118348-0149 in yellow gold features a 36 mm case with integrated lugs and a 20 mm lug width. Powered by the Rolex caliber 3155 automatic movement with 31 jewels and a 48-hour power reserve, this watch displays the day and date on a champagne dial with baguette indices. Water resistant to 100 meters, it represents the contemporary evolution of the iconic Day-Date line launched in 1956.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 118348-0149?

The lug width of the Rolex Day-Date 36 118348-0149 is 20 mm. This measurement represents the external distance between the case lugs and is specific to the 36 mm model variant. Always verify this dimension with a calliper before ordering a replacement strap to ensure perfect geometric compatibility.

Which strap material is best suited for the yellow gold Rolex Day-Date 36 118348-0149?

Alligator leather in dark brown tones is the most harmonious choice for the yellow gold Day-Date 36, as its fine grain reflects the warmth of the precious metal. Alternatives of equal prestige include vegetable-tanned calf leather in cognac tones or shell cordovan. For technical solutions, synthetic NATO and vulcanised rubber offer practicality whilst maintaining proportions appropriate to the 20 mm lug width.

How do you change the strap on a Rolex Day-Date 36 118348-0149?

Strap replacement requires removal of the case spring bars using a specialised tool (spring bar remover). Position the watch on a flat surface, carefully manipulate the tool to compress the internal elastic pin, extract the old strap and insert the new one, verifying that the pin engages firmly in both lugs. We recommend performing this operation with care to avoid damaging the case; if in doubt, contact an authorised Rolex service centre.

Can an aftermarket strap be fitted to the Rolex Day-Date 36 118348-0149?

Yes, any strap with a 20 mm lug width is geometrically compatible with the Day-Date 36 118348-0149. Milano Straps offers a specialised collection of artisanal 20 mm straps, crafted from noble materials (alligator, calf, shell cordovan) and custom finishes. These aftermarket straps maintain the same quality standards as the original Rolex bracelet, guaranteeing longevity and comfort.

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

A high-quality artisanal leather strap, such as those produced by Casati Milano with vegetable tanning, has an average lifespan of 5-7 years of daily use, varying according to intensity of use, environmental humidity and maintenance care. Natural leather develops visible patina over time, acquiring deeper tones. With periodic maintenance (cleaning, conditioning with specialist products), longevity can exceed 10 years. Technical leathers (rubber, synthetic NATO) offer greater durability but lesser aesthetic character.

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