Technical Archive

Rolex
Datejust 31 278278-0036— lug 16mm

Rolex Datejust 31 278278-0036: 16mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Datejust 31 Yellow Gold / Fluted / Grey - Diamond / President

Artisanal Note

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

Technical Specifications

Rolex 278278-0036
Lug Width
16 mm

The essential strap measurement.

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Reference

278278-0036

Movement

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

The Heritage

The Datejust 31 represents the female version of the Rolex Datejust collection. It is equipped with the automatic Caliber 2236 with hour, minute, second and date functions, certified as a chronometer. The case measures 31mm with 16mm lugs.

FAQ

What is the lug width of the Rolex Datejust 31 278278-0036?

The lug width of the Rolex Datejust 31 278278-0036 is 16 mm. This measurement represents the distance between the case lugs and determines the exact strap width required. Any strap with a 16 mm attachment point will be compatible with this model, provided it maintains a consistent thickness of at least 3.5 mm.

Which strap is best suited for the yellow gold Datejust 31?

For the yellow gold Datejust 31, the most versatile and elegant options are alligator leather (particularly in cognac or blue tones), vegetable-tanned calf (medium brown or Tuscan), or shell cordovan (burgundy). Alligator offers the classic solution with natural brilliant patina; cordovan ensures extraordinary durability and a mirror-like patina that deepens over time; vegetable-tanned calf develops caramel-brown undertones ideal for daily wear.

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

Changing the strap on a Datejust 31 is best entrusted to a professional watchmaker or specialist service such as Casati Milano. The procedure requires specific tools (spring bar tool) and precision to avoid damaging the case lugs. The retention springs must be carefully depressed and reinserted symmetrically to ensure stability and prevent lateral movement of the strap.

Can I use an aftermarket strap on this Rolex?

Yes, any leather strap with a 16 mm attachment point is compatible with the Datejust 31 278278-0036, provided it meets consistent quality standards. Artisanal straps from milanostraps.it are crafted from premium leathers (alligator, cordovan, calf) and guaranteed against manufacturing defects for 18 months. A quality aftermarket strap not only personalises the watch but also extends its working life by allowing frequent rotation of the strap collection.

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

Durability depends on leather type, intensity of use and maintenance. A quality alligator or cordovan strap typically lasts 3-5 years of daily wear before showing significant signs of wear. Vegetable-tanned calf tends to last slightly less (2-4 years) but develops a more fascinating patina. Periodic strap replacement is normal and recommended: it keeps the watch hygienic and allows seasonal or formal colour variations.

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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