Strap for Datejust 31 White Gold Diamond / Black - Roman

The lug width of the Rolex Datejust 31 ref. 278289rbr-0011 is 16mm. This measurement refers to the internal distance between the case lugs at the point where the strap attaches, and exclusively determines strap compatibility. It is specific to this 31mm format, distinct from the Datejust 36 (20mm) and the Lady-Datejust 28 (13mm).

For the Datejust 31 278289rbr-0011 in white gold with a diamond-set bezel, a vegetable-tanned alligator strap is the most coherent choice both aesthetically and technically. The natural grain of the scales develops a unique patina over time that complements the precious case. For more casual or everyday wear, a bespoke vulcanised rubber strap in 16mm is a functional alternative without aesthetic compromise.

To remove the original strap from the Datejust 31, a dedicated springbar tool is required — a bifurcated pin tool that compresses the spring bars housed within the lugs. Care must be taken to avoid scratching the 18kt white gold case: felt pads or non-abrasive tape should be applied to the lugs during the procedure. Fitting the new 16mm strap is the reverse process, inserting the spring bars into the lug holes until they click into place.

Yes. Any strap with a 16mm lug width is technically compatible with the Datejust 31 278289rbr-0011, provided the spring bars have the correct diameter (1.5mm) and appropriate length for the Rolex case. Milano Straps produces artisanal straps in 16mm with selected materials — alligator, calf, shell cordovan, rubber — handcrafted in Italy with buckles or deployant clasps in steel or precious metals.

The lifespan of a leather strap depends on material quality and frequency of use. A high-quality vegetable-tanned alligator strap, with regular use and proper care (avoiding prolonged contact with water and perspiration, applying neutral conditioner periodically), maintains its structural and aesthetic integrity for 3 to 5 years. The keeper and the bend area are subject to the greatest wear; a double saddle stitch provides superior mechanical resistance over time.