Technical Archive

Rolex
Datejust 31 178248-0089— lug 16mm

Rolex Datejust 31 178248-0089: 16mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Datejust 31 Yellow Gold Domed / Oyster / Champagne Roman

Artisanal Note

"This model requires a precise 16mm lug width to preserve the original sartorial balance."

Technical Specifications

Rolex 178248-0089
Lug Width
16 mm

The essential strap measurement.

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Reference

178248-0089

Movement

Rolex caliber 2235 Hours, Minutes, Seconds | Date | Chronometer

The Heritage

The Datejust 31 represents the female version of the Rolex Datejust collection, with a 31mm diameter case. It is powered by the automatic Calibre 2235 with hour, minute, second and date functions, certified as a chronometer. The lugs measure 16mm in width for strap accommodation.

FAQ

What is the lug width of the Rolex Datejust 31 Ref. 178248-0089?

The lug width of the Rolex Datejust 31 Ref. 178248-0089 is 16 millimetres. This dimension, known as the lug width, represents the distance between the lugs of the case and determines compatibility with any aftermarket strap. There is no tolerance: a strap must be exactly 16mm to fit correctly.

What is the best strap for the Rolex Datejust 31 178248-0089?

The best strap depends on your lifestyle and context of use. American <a href="/pages/termine-glossario/alligatore">alligator</a> leather represents the ideal compromise between elegance and practicality, thanks to its regular texture and durability. For formal wear, a black calf strap with <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> is the classic choice. Japanese <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a> is recommended for those seeking extreme longevity (10-15 years).

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

The strap is changed using a spring bar tool, a hook-shaped instrument that gently lifts the spring bars—the small spring-loaded pins that secure the strap to the case lugs. Position the tool above one spring bar, apply gentle inward pressure, and simultaneously pull the strap away. Repeat on the other side. The operation takes 2-3 minutes and requires no watchmaking expertise.

Which aftermarket strap is compatible with the 178248-0089?

Any strap with a 16 millimetre lug width is compatible with the 178248-0089. Artisan manufacturers such as Casati Milano craft bespoke straps selecting from alligator, calf leather, shell cordovan and rubber, ensuring perfect fit and sartorial-level finishing. Discover the <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-16mm">16mm straps available</a>.

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

Durability depends on the material and frequency of use. American alligator lasts 5-7 years with daily wear. Vegetable-tanned calf has an average lifespan of 3-5 years. Shell cordovan, thanks to its fibre density, can last 10-15 years. Natural rubber has a lifespan of 3-4 years. Regular maintenance (cleaning, drying after moisture exposure) significantly extends strap 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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