Rolex · Datejust 36

Strap for Datejust 36 Stainless Steel Diamond / Jubilee / Blue Computer

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
Reference116244-0021
FamilyDatejust 36
MovementRolex caliber 3135 hours, minutes, seconds | chronometer
CaseWhite 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 116244-0021

Selected for the 20 mm lug width · workshop selection

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The Datejust 36 116244-0021, seen from the bench

The Datejust 36 reference 116244-0021 combines stainless steel 904L and 18k white gold, featuring a white gold diamond bezel and blue computer dial. The 36mm Oyster case houses the Rolex caliber 3135 automatic movement, COSC-certified chronometer with ±2 seconds/day precision. Water-resistant to 100 meters, it features a curved lug design requiring 20mm curved-end straps for proper integration without gaps. The compact case diameter sits comfortably under shirt cuffs, a rare quality in modern watchmaking.

Frequently asked questions

What is the lug width of the Rolex Datejust 36 116244-0021?

The lug width of the Rolex Datejust 36 116244-0021 is 20mm. This measurement is standard across the entire Datejust 36 Oyster case family and requires straps with curved ends to ensure a correct, gap-free fit at the case attachment points.

What is the best strap for the Rolex Datejust 36 116244-0021?

For the Datejust 36 116244-0021, with its bi-material case in stainless steel and white gold, alligator straps with symmetrical grain or shell cordovan in vegetable tanning offer the finest aesthetic coherence. The choice depends on the dial: deep burgundy or midnight blue suit light dials, whilst anthracite or slate grey complement darker ones.

How do you change the strap on a Rolex Datejust 36?

The strap on a Rolex Datejust 36 is removed using a spring bar tool or a thin-tipped case opener to release the spring bars connecting the strap to the case lugs. Rest the watch on a soft surface and operate carefully to avoid scratching the case. For straps with curved ends, the replacement strap must feature the same profile to ensure a flush, gap-free fit.

Are there aftermarket straps compatible with the Rolex Datejust 36 116244-0021?

Yes, high-quality aftermarket straps are available for the Rolex Datejust 36 116244-0021. It is essential that the strap measures 20mm at the lug and features curved ends to match the geometry of the Oyster lugs correctly. Casati Milano crafts bespoke straps specifically shaped for this geometry, available in a range of materials and finishes.

How long does a leather strap last on a Rolex Datejust 36?

The lifespan of a leather strap depends on the material and frequency of wear. A quality alligator strap with vegetable tanning and hand-polished finish can last between 3 and 7 years with regular alternated use. Shell cordovan, owing to its dense fibre structure, tends to last longer and develops an appealing patina over time. Prolonged exposure to water, perspiration and UV rays accelerates deterioration: it is advisable to remove leather straps during intense physical activity or water exposure.

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