Technical Archive

Rolex
Lady-Datejust 279178-0011— lug 14mm

Rolex Lady-Datejust 279178-0011: 14mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Lady-Datejust 28 Yellow Gold Fluted / President / Lilac Diamond

Artisanal Note

"This model requires a precise 14mm lug width to preserve the original sartorial balance."

Technical Specifications

Rolex 279178-0011
Lug Width
14 mm

The essential strap measurement.

Browse 14mm straps →
Reference

279178-0011

Movement

Rolex caliber 2236 Hours, Minutes, Seconds | Date | Chronometer

The Heritage

The Rolex Lady-Datejust 279178-0011 is a 28mm yellow gold watch introduced in 1957, featuring a round case with date window at 3 o'clock and sapphire crystal. It houses the Rolex Caliber 2236, a COSC-certified chronometer movement with Syloxi silicon balance wheel and approximately 55-hour power reserve. The lug width is 14mm, determining strap compatibility. This watch embodies Geneva watchmaking philosophy applied to women's wrists through precise construction and refined finishing.

FAQ

What is the lug width of the Rolex Lady-Datejust 279178-0011?

The lug width of the Rolex Lady-Datejust 279178-0011 is 14mm. This measurement refers to the internal distance between the two lugs of the case and is the key parameter for selecting a compatible strap. It is recommended to verify this dimension with a digital calliper before ordering an aftermarket strap.

What is the best strap for the Rolex Lady-Datejust 279178-0011 in yellow gold?

For the Lady-Datejust 279178-0011 in 18-carat yellow gold, the most fitting strap is a vegetable-tanned alligator with a regular belly grain, in shades of tobacco, cognac or bordeaux. Shell cordovan offers a more understated alternative with excellent aesthetic quality. Both materials develop a patina over time that complements the warmth of yellow gold.

How do you change the strap on a Rolex Lady-Datejust 279178-0011?

To replace the strap on the Lady-Datejust 279178-0011, the two spring bars connecting the strap to the case lugs must be removed. A flat-blade spring bar tool or lever-type tool is required. Care should be taken not to scratch the yellow gold lugs: covering the case with soft adhesive tape during the operation is strongly advisable.

Is there an aftermarket strap compatible with the Rolex Lady-Datejust 279178-0011?

Yes. Any strap with a 14mm lug width is mechanically compatible with the Lady-Datejust 279178-0011. milanostraps.it offers handcrafted straps in alligator, shell cordovan and vegetable-tanned calf leather cut precisely to 14mm. For a fully bespoke option with direct leather selection, Casati Milano atelier provides a made-to-measure service by appointment.

How long does a leather strap last on a Rolex Lady-Datejust 279178-0011?

The lifespan of a leather strap depends on the material, frequency of use, and exposure to moisture and perspiration. A quality vegetable-tanned alligator strap, with moderate daily wear, typically lasts 2 to 4 years before replacement is needed. Shell cordovan, owing to its dense fibre structure, generally lasts longer. Regular conditioning with neutral leather care products 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.

Request an appointment →

By appointment only · Milan

The atelier's website: casatimilano.com