Rolex · Datejust 36

Strap for Datejust 36 Rolesor Yellow Domed / Jubilee / Steel Roman

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
Reference116203-0145
FamilyDatejust 36
MovementRolex caliber 3135 hours, minutes, seconds | chronometer
Year2018
CaseYellow Gold, Stainless Steel

Recommended spring bar

Modern Rolex spring bars 20mm — 1.5mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.5 mm · closed lugs

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Straps for the Datejust 36 116203-0145

Selected for the 20 mm lug width · workshop selection

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The Datejust 36 116203-0145, seen from the bench

The Rolex Datejust 36 116203-0145 combines yellow gold and stainless steel 904L in a 36 mm case. Launched in 1945, it features the caliber 3135 automatic movement with approximately 48-hour power reserve and 28,800 oscillations per second. The 20 mm lug width accommodates a wide range of straps. Water-resistant to 100 meters, it includes a Cyclops lens magnifying the date window by 2.5 times and an internal rotating bezel for measuring time intervals.

Frequently asked questions

What is the exact lug width of the Rolex Datejust 36 116203-0145?

The lug width of the Rolex Datejust 36 116203-0145 is precisely 20 millimetres. This specification applies to all variants of the 36mm case, regardless of material combination (yellow gold, stainless steel, or two-tone). To verify compatibility, measure the distance between the two lugs using a digital calliper, positioning the tool perpendicular to the case and excluding any decorative protrusions.

Which strap material suits the Datejust 36 in yellow gold and stainless steel best?

For a Datejust 36 116203-0145 in yellow gold and stainless steel, dark brown alligator (tobacco shade) offers exceptional elegance, with natural scutes that enhance the contrast between the metals. Black alligator excels in formal contexts, whilst shell cordovan delivers rich patina development and superior durability. A vegetable-tanned calf represents the most robust everyday solution without aesthetic compromise.

How do I correctly change the strap on my Datejust 36?

To replace the strap, first remove the deployante (folding clasp) if present, or the standard buckle. Use a dedicated spring bar tool to extract the elastic pins positioned in the lug recesses. Insert the new strap carefully, ensuring the pins click fully into position. Avoid direct impacts on the case during the operation.

Are aftermarket straps truly compatible with the 116203-0145?

Yes, any strap manufactured for a 20mm lug width is mechanically compatible with the Datejust 36 116203-0145. However, construction quality and longevity vary significantly amongst producers. An Italian artisanal strap in alligator or shell cordovan ensures perfect compatibility, natural flexibility, and longevity exceeding 5-7 years, whilst industrial standard straps tend to deteriorate sooner.

How long does a natural leather strap typically last?

A quality leather strap (alligator, shell cordovan, fine calf) typically lasts 5-10 years under ordinary use, depending on frequency of wear and maintenance care. Continuous exposure to direct sunlight and humidity reduces longevity. An Italian artisanal strap maintains elasticity and structural integrity longer owing to superior tanning and treatment processes. The 18-month warranty covers manufacturing defects only, not natural wear.

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