Rolex · Datejust 31

Strap for Datejust 31 Everose Fluted / President / Black 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
Reference178275f-0030
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 178275f-0030

Selected for the 16 mm lug width

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The Datejust 31 178275f-0030, seen from the bench

The Datejust 31 is equipped with the automatic Rolex 2235 chronometer-certified caliber, which provides hour, minute, second and date indications. The case has 16mm lugs and maintains the classic proportions of the Datejust collection. The movement guarantees chronometric precision according to COSC standards.

Frequently asked questions

What lug width does the Rolex Datejust 31 178275f-0030 have?

The Rolex Datejust 31 178275f-0030 features a lug width (inside-to-inside measurement) of 16mm. This specific measurement is designed for feminine wrists and those with particularly slender wrists. Measurement must be taken with a digital calliper, positioning the tip between the inner shoulders of the case lugs.

Which strap material suits the Datejust 31 in Everose Gold best?

Vegetable-tanned alligator is the most noble choice for a Datejust 31 in Everose Gold: its rectilinear grain and exceptional tear resistance make it ideal. Calf leather with fine grain offers a contemporary approach, whilst shell cordovan develops a truly extraordinary patina over years of wear. Vulcanised rubber is recommended for those seeking waterproof durability during more adventurous use whilst maintaining elegance.

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

Strap replacement requires professional tools: a spring bar remover and spring bar pliers. Place the watch on a soft surface, insert the remover into the small slot on the lug from underneath and gently push to extract the spring bar. Repeat on the opposite side. Insert the new spring bar from the strap between the lugs, using pliers to guide it until it clicks into position. We recommend entrusting this operation to a professional watchmaker to avoid case damage.

Is a 16mm aftermarket strap compatible with the 178275f-0030?

Yes, any strap with a 16mm lug width is compatible with the Datejust 31 178275f-0030. Compatibility depends solely upon the width measured between the inner lugs. Bespoke artisanal straps can be crafted with millimetre tolerances to guarantee perfect fit, eliminating lateral movement. Ensure that spring bars used are of standard diameter (typically 1.5-1.6mm).

How long does a natural leather strap last on a daily-worn watch?

An artisanally crafted vegetable-tanned leather strap, using quality hides, typically lasts between 3 to 5 years of daily wear. Longevity depends upon exposure to moisture, perspiration, sunlight and maintenance frequency. A vegetable-tanned alligator strap usually lasts longer owing to fibre density. Vulcanised natural rubber straps typically last 5-7 years. Casati Milano's warranty covers 18 months against manufacturing defects, whilst natural wear is considered part of the object's 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