Rolex
Datejust 31 178313-0026— lug 16mm

The lug width of the Rolex Datejust 31 178313-0026 is 16 millimetres. This measurement indicates the distance between the two spring bar attachments on the case where the strap connects. It is a standard specification for the 31mm model and must be verified before purchasing any aftermarket strap to ensure full compatibility with the timepiece.

For the Datejust 31 178313-0026 with mother-of-pearl dial and Rolesor case (yellow gold and stainless steel), the ideal choice is an alligator strap of superior quality, which develops an incomparable patina over time. Tortora or black alligator elevates the Rolesor elegance without competing with the iridescent dial. Alternatively, fine French calfskin guarantees uniform surface and certified durability, while vegetable-tanned leather introduces sustainability and authentic patina development.

Changing the strap on a Datejust 31 requires a specific tool (spring bar tool). Position the watch on a soft, stable surface and gently insert the curved tip of the tool under the elastic spring pin from one side, pushing lightly to compress the internal spring whilst simultaneously extracting the pin. Repeat the operation on the other side. Insert the new strap's pins into the same holes, ensuring they click securely in place. For greater security, it is advisable to consult an expert.

Yes, any strap with a 16-millimetre lug width is perfectly compatible with the Datejust 31 178313-0026, provided it meets the correct specifications. Specialist manufacturers such as Milano Straps offer straps in alligator, calfskin, vegetable-tanned leather and other materials, all certified for compatibility with this reference. It is essential to purchase from reputable builders who guarantee the quality of craftsmanship and leather durability.

The lifespan of a leather strap depends on the material, usage and maintenance. A quality alligator strap can last 5-7 years with daily wear, thanks to the natural resistance to cracking. Fine French calfskin guarantees 3-5 years of service. Vegetable-tanned leather has a similar longevity to calfskin but develops a fascinating patina over time. Regular maintenance (gentle cleaning and drying) and rotating straps with alternatives significantly extends the lifespan of the leather.