Rolex · Datejust 36

Strap for Datejust 36 Stainless Steel / Fluted / Black / Jubilee

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
Reference126234-0015
FamilyDatejust 36
MovementRolex caliber 3235 hours, minutes, seconds | date | chronometer
Year2019
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

All Rolex spring barsOpen →

Straps for the Datejust 36 126234-0015

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Datejust 36 126234-0015, seen from the bench

The Datejust was introduced in 1945 as the first automatic watch with instant date change. It is equipped with the automatic caliber 3235 with chronometer certification and a power reserve of 70 hours. The 36mm case features 20mm lugs, available in various material combinations.

Frequently asked questions

What is the lug width of the Rolex Datejust 36 126234-0015?

The lug width of the Rolex Datejust 36 126234-0015 is 20 millimetres. This measurement is standard for the Datejust 36 family and is essential for verifying compatibility with any aftermarket strap. To measure it correctly, remove the original strap and measure the distance between the spring bars that connect the case to the strap. A measurement error will result in mechanical incompatibility.

Which strap is recommended for the Datejust 36 126234-0015?

For the Datejust 36 126234-0015, we recommend materials that highlight the white gold and stainless steel two-tone combination. Dark brown or black alligator with vegetable tanning represents the highest elegance, particularly on champagne dials. Vegetable-tanned calf leather offers transparent ageing and a patina that evolves over time. For daily use, an English fabric NATO ensures protection and versatility. Your choice depends on usage context and colour preferences.

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

Changing the strap on a Datejust 36 requires specific tools: a spring bar removal tool and a soft, non-abrasive support base. Position the watch with the caseback facing down on a soft cloth. Insert the removal tool into the small hole of the upper spring bar to compress it, then extract the bar. Repeat the operation for the lower spring bar. Reverse the procedure to install the new strap, ensuring both spring bars lock correctly into the case seats.

Is an aftermarket strap compatible with the Rolex Datejust 36 126234-0015?

Yes, any strap with a 20mm lug width is mechanically compatible with the Datejust 36 126234-0015. However, we recommend verifying width and thickness specifications to ensure aesthetic harmony. High-quality artisanal straps, such as those made from alligator or vegetable-tanned calf, maintain craftsmanship that will not damage the case and will last over time. Avoid straps made from low-quality materials that could mark the white gold case.

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

A high-quality leather strap (alligator, vegetable-tanned calf, shell cordovan) lasts between 3 and 5 years with ordinary maintenance and daily use. Durability depends on exposure to perspiration, humidity and maintenance level. To extend strap life, avoid prolonged water immersion, remove the watch before intense aquatic activities and occasionally apply protective cream to vegetable-tanned leathers. Artisanal straps with vegetable tanning develop a noble patina that evolves over time, whilst alligator straps retain their structure longer if kept in dry environments.

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