Rolex · Datejust 31

Strap for Datejust 31 Everose Domed / President / MOP Roman

Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width16 mm
Case diameter31 mm
Reference178245f-0034
FamilyDatejust 31
MovementRolex caliber 2235 hours, minutes, seconds | date | chronometer
CaseRose Gold

Spring bar

Spring bars for Rolex

The right category for this model · choose the 16 mm size

Straps for the Datejust 31 178245f-0034

Selected for the 16 mm lug width

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The Datejust 31 178245f-0034, seen from the bench

The Datejust 31 represents the ladies' version of the Rolex Datejust collection. It is powered by the automatic caliber 2235 certified chronometer with indication of hours, minutes, seconds and date. 31mm case with 16mm lugs.

Frequently asked questions

What is the exact lug width of the Rolex Datejust 31 178245f-0034?

The Rolex Datejust 31 178245f-0034 has a lug width of 16mm. This dimension is specific to the 31mm ladies' model and represents the aesthetic balance between delicacy and visual proportion. To verify accurately, use a digital calliper measured from the inner edge to inner edge of the lug pins, not from the centre of the mounting holes.

Which strap material is most suitable for the Datejust 31 in Everose gold?

For the Datejust 31 178245f-0034 in Everose gold, Nile alligator represents the most harmonious formal choice: its natural grain amplifies the warmth of rose gold, creating an elegant chromatic dialogue. Alternatively, vegetable-tanned calf offers organic patina that visibly ages over time, whilst FKM rubber is ideal for sporty and marine contexts without compromising functionality.

How do I correctly change the strap on my Rolex Datejust 31?

Changing the strap requires a spring bar removal tool. Remove the watch from your wrist, position the tool in the lower lug hole, gently push upward to release the front pin, then extract it completely. Repeat on the opposite side. Ensure the new pins are fully inserted and click securely before wearing. If uncertain, consult a certified watchmaker.

Are aftermarket straps compatible with the Rolex Datejust 31 178245f-0034?

Yes, any strap with a 16mm lug width is geometrically compatible. However, aesthetic compatibility is subjective: inferior quality straps may appear disproportionate or undersized visually. For guaranteed stylistic harmony and longevity, we recommend specialised artisans who understand the constructive proportions of the Datejust. Always verify lug width precision before purchase.

How long does a leather strap last on a Rolex Datejust 31?

Lifespan depends on leather quality and intensity of use. Premium alligator or shell cordovan, with regular maintenance (soft brush cleaning, annual conditioning), guarantees 5-8 years of daily wear without structural failure. Calf leather has similar durability but greater aesthetic deterioration visibility. FKM rubber lasts 3-4 years before becoming brittle. Canvas NATO straps can last indefinitely if changed regularly.

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