Rolex · Datejust 31

Strap for Datejust 31 Everose Domed / President / Pink Floral

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-0031
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-0031

Selected for the 16 mm lug width

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The Datejust 31 178245f-0031, seen from the bench

The Rolex Datejust 31 Everose Domed (ref. 178245f-0031) is a refined 31mm women's watch from the legendary Datejust line launched in 1945. The 18kt Everose gold case features a machined fluted bezel and polished surfaces, with a date window at 3 o'clock magnified 2.5x. Powered by the automatic Rolex 2235 caliber with 31 jewels, COSC chronometer certification, and approximately 48 hours power reserve, it offers thermal stability and shock resistance via its Parachrom hairspring. The 16mm lug width is specific to this model and requires compatible straps with 1.5mm spring bars.

Frequently asked questions

What is the lug width of the Rolex Datejust 31 ref. 178245f-0031?

The Rolex Datejust 31 reference 178245f-0031 has a lug width of 16mm. This measurement should be taken with a digital calliper at the inner distance between the two lugs at the point where the strap meets the case, not at the outer lug width.

What is the best strap for the Rolex Datejust 31 178245f-0031 in Everose gold?

For an 18kt Everose gold case, a polished alligator strap in cognac or tobacco tones offers the most coherent pairing in terms of material and colour. Shell cordovan or vegetable-tanned calf leather develop a natural patina over time. For sport or water use, a vulcanised rubber strap maintains the model's elegant profile.

How do you change the strap on a Rolex Datejust 31?

To replace the strap, remove the spring bars from the lugs using a fine-tipped spring bar tool. The Datejust 31 uses spring bars with a diameter of 1.5mm. Always work on a soft surface to avoid scratching the gold case. If in doubt, it is advisable to have the strap fitted by a watchmaker or a professional atelier.

Are there aftermarket straps compatible with the Rolex Datejust 31 ref. 178245f-0031?

Yes. Aftermarket straps with a 16mm attachment and 1.5mm spring bars are compatible with reference 178245f-0031. It is essential to verify that the strap ends are correctly shaped to match the curvature of Rolex lugs. Milanostraps.it offers a selection of handcrafted 16mm straps made specifically for this reference.

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

Longevity depends on leather quality and usage. A high-grade alligator or shell cordovan strap, with proper care, retains structural and aesthetic integrity for 3 to 5 years under regular wear. Vegetable-tanned calf leather develops patina but requires periodic conditioning. Prolonged exposure to water significantly shortens the service life of any leather strap.

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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