Rolex · Datejust 36

Strap for Datejust 36 Rolesor Yellow Diamond / Oyster/ Champagne Diamond

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
Reference116243-0031
FamilyDatejust 36
MovementRolex caliber 3135 Hours, Minutes, Seconds | Chronometer
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 116243-0031

Selected for the 20 mm lug width · workshop selection

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The Datejust 36 116243-0031, seen from the bench

The Datejust 36 116243-0031 features a 36mm bicolor case combining 18k yellow gold and Oystersteel in the Rolesor yellow configuration. The watch houses the COSC-certified caliber 3135 movement beating at 28,800 vibrations per hour with a 48-hour power reserve. The blue Parachrom hairspring and integrated Paraflex shock absorption system ensure precision during daily wear. The Oyster case is water-resistant to 100 meters with screw-down crown and caseback. Lug width measures 20mm.

Frequently asked questions

What is the lug width of the Rolex Datejust 36 116243-0031?

The lug width of the Rolex Datejust 36 116243-0031 is 20mm. This measurement is taken internally between the two horizontal lugs of the case using a digital calliper or a millimetre ruler. It is the value to specify when purchasing any compatible aftermarket strap.

What is the best strap for the Rolex Datejust 36 116243-0031?

For the Datejust 36 116243-0031 in yellow Rolesor, an alligator strap with vegetable tanning is the most coherent choice given the watch's formal register. The belly grain echoes the knurled texture of the gold bezel. For more active use, smooth calf leather or vulcanised rubber are sound alternatives. A deployant clasp in gold or steel is preferable to a simple buckle for long-term stability and even pressure distribution.

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

Removing the original strap from the Datejust 36 requires a springbar tool — a double-tipped instrument that compresses the spring bars seated within the lugs. Insert the forked tip between the strap and the lug, compress the spring bar inward and slide the strap free. The operation is entirely reversible and requires no Rolex-specific tools, though care should be taken to avoid scratching the gold lugs.

Are there aftermarket straps compatible with the Rolex Datejust 36 116243-0031?

Yes. The 20mm lug width of the Datejust 36 116243-0031 is among the most common in watchmaking, ensuring a wide range of quality aftermarket straps. Milano Straps offers a curated selection of handcrafted straps in alligator, shell cordovan, calf leather and rubber, supplied with spring bars and available in various lengths to suit any wrist circumference.

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

The lifespan of a leather strap depends on the type of hide, tanning quality and frequency of wear. A vegetable-tanned alligator strap worn in rotation with other watches can last between three and five years while retaining structural and aesthetic integrity. Prolonged exposure to water, perspiration and heat accelerates deterioration. Storing the strap on a dedicated cushion and treating it periodically with neutral wax significantly extends its 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