Rolex · Day-Date 36

Strap for Day-Date 36 Yellow Gold Diamonds / Oyster / Bull's Eye

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
Reference118348-0162
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

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Straps for the Day-Date 36 118348-0162

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 118348-0162, seen from the bench

The Day-Date was introduced in 1955 as the first wrist watch to display the day and date in full. It is equipped with the automatic Caliber 3155 chronometer-certified, with hour, minute, second, date and day of the week indications. Case size of 36mm with 20mm lugs.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 ref. 118348-0162?

The lug width of the Rolex Day-Date 36 ref. 118348-0162 is 20 mm. This measurement represents the distance between the inner edges of the lugs where the strap attaches. To verify, use a digital calliper and measure the distance between the inner border of one lug and the inner border of the opposite lug. This specification allows you to access the complete catalogue of 20 mm compatible straps.

What is the best strap material for a yellow gold Day-Date 36?

Alligator is the most natural and noble choice for a yellow gold Day-Date 36. Its fine and uniform grain, combined with its ability to develop personal patina over time and its substantial hand-feel, make it the ideal companion for the watch. Alternatively, vegetable-tanned calf leather offers a silky texture and develops a fascinating patina with age. Shell cordovan, with its deep burgundy colour, is a rarer but magnificently bold choice. The selection depends on your use case and colour preferences.

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

Changing the strap on the Day-Date 36 requires a spring bar tool. Position the watch with the lug side facing upwards, insert the spring bar tool under the lug to apply pressure on the lateral spring bars, and gently extract the old strap. Then align the pins of the new strap with the lug holes and press until you hear a click. If you are inexperienced, we recommend entrusting the task to a professional to avoid damage to the case.

Can I use a quality aftermarket strap on a Rolex Day-Date 36?

Absolutely. A quality artisanal strap in alligator, calf leather, or shell cordovan with 20 mm lug width is not only mechanically compatible, but elevates the aesthetic experience of the Day-Date 36 further. Artisanal straps allow you to personalise colour, texture, buckle type, and construction according to your preferences. Many collectors prefer aftermarket straps because they offer aesthetic versatility and seasonal rotation possibilities.

How long does a leather strap last on a 20 mm lug watch?

The lifespan of a leather strap depends on material quality, frequency of use, and environmental conditions. High-quality alligator or calf leather with vegetable tanning and artisanal construction guarantees durability of 3 to 7 years with regular use and proper maintenance (avoid prolonged perspiration exposure, clean periodically, allow to dry completely). Shell cordovan is even more durable. Casati Milano's warranty covers 18 months against manufacturing defects. Periodic strap replacement is natural and allows you to rotate the watch's colour palette according to seasons and occasions.

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