Rolex · Day-Date 36

Strap for Day-Date 36 Platinum Domed / President / Oxford MOP

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
Reference118206-0119
FamilyDay-Date 36
MovementRolex caliber 3155 hours, minutes, seconds | date, day | chronometer
CasePlatinum

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 118206-0119

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 118206-0119, seen from the bench

The Rolex Day-Date 36 118206-0119 in platinum 950 combines a 36mm case with the Rolex Caliber 3155 automatic movement, offering 70 hours of power reserve and COSC chronometer certification. The fixed bezel, screw-down crown Triplock, and hermetic caseback ensure water resistance to 100 meters. The 20mm lug width is a precise specification requiring exact compatibility, as standard aftermarket straps sized for 18, 19, 21, or 22mm lugs will not fit properly without causing structural issues.

Frequently asked questions

What is the exact lug width of the Rolex Day-Date 36 118206-0119?

The lug width of the Rolex Day-Date 36 118206-0119 is precisely 20 millimetres. This measurement is taken by positioning a digital calliper between the upper attachment points of the case, from the centre of one lug to the centre of the opposite lug. Verifying this measurement before ordering a strap is essential: incorrect dimensions generate undesirable aesthetic effects and structural tension on the case.

Which material is most suitable for a strap on the Day-Date 36 118206-0119 in platinum?

Natural alligator represents the traditional choice for this model: its regular grain contrasts elegantly with the platinum's lustrous finish. For those who appreciate the patina that develops over time, vegetable-tanned calf leather offers a fascinating chromatic transformation. Shell cordovan delivers a unique fibre compactness and natural lustre, ideal for occasions of absolute formality and authority.

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

Replacement requires a spring bar tool and a stable, well-lit work surface. Position the watch face-down, locate the internal spring of the upper lug and gently press towards the case centre to release the strap. Repeat for the lower lug. When reinserting, ensure the spring engages fully on both sides of the case lug. If you lack experience, changing the strap at an authorised Rolex service centre is always preferable to avoid damage.

Which aftermarket straps are compatible with the Rolex Day-Date 36 118206-0119?

Only straps specifically constructed for the 20-millimetre lug width are compatible with this model. Standard aftermarket straps (18, 19, 21 or 22mm) will not fit correctly. Milanostraps.it offers a dedicated collection of hand-made straps tailored for this reference, with the possibility of material and colour customisation through the Casati Milano atelier.

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

Durability depends on usage and care. An alligator or calf leather strap subjected to weekly rotation with other straps typically lasts 4-7 years before requiring replacement. Shell cordovan, being more durable, can last up to 10 years. Constant exposure to perspiration, water and UV rays accelerates ageing. Occasionally applying a conditioning product specific to noble leathers significantly extends the strap's service life.

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