Strap for Datejust 31 Stainless Steel Fluted / Jubilee / White - Roman

The lug width of the Rolex Datejust 31, reference 278274-0010, is 16 millimetres. This specific measurement must be observed when selecting an aftermarket compatible strap. To verify it, measure with a digital calliper the internal distance between the two attachment pins on the case where the strap is fitted.

Alligator represents the most refined choice, particularly when tanned using traditional methods. Calf leather in vegetable tanning offers superior durability and develops a pronounced patina over time. For sporting contexts, fabric NATO provides versatility and practicality without compromising the elegance of the white gold and steel case.

To change the strap, you must use a spring bar tool, a specialised instrument that compresses the spring pins. Position the tool in the dedicated slot on the side of the lug, compress gently until the pin retracts, then extract the strap. Insert the new strap by aligning the holes with the lugs, release the pressure and verify that the pin is fully engaged. If inexperienced, consult a professional watchmaker.

An artisanal black alligator strap measuring 16mm represents the finest aftermarket solution for this model. The natural texture of the reptile skin dialogues perfectly with the material contrasts between steel and white gold. For bespoke solutions, an atelier such as Casati Milano offers custom-made work with personal leather selection and an 18-month guarantee on manufacturing defects.

A premium quality leather strap has a lifespan of 3-5 years with moderate daily wear. This depends on frequency of wear, humidity exposure and maintenance. A quality alligator, when properly cared for (gently cleaned and not exposed to direct heat sources), can last 7-10 years. Part-time use and appropriate maintenance significantly extend longevity.