Strap for Datejust 31 Yellow Gold / Diamond / Champagne / President

The lug width (ansa width) of the Rolex Datejust 31 reference 278288rbr-0022 is exactly 16 millimetres. This dimension is specific to the ladies' models of the Datejust 31 line and is essential when selecting any replacement strap. To verify, measure the distance between the two horizontal attachment pins with a digital calliper: it must correspond exactly to 16 mm to ensure compatibility and mounting stability.

For the 278288rbr-0022, alligator remains the most natural choice from both aesthetic and functional perspectives. A polished black or cognac brown alligator emphasises the dress watch spirit of the timepiece. Alternatively, shell cordovan offers superior durability and develops a patina over time. For more casual contexts, vegetable-tanned calf leather ensures sustainability without compromising on constructive and aesthetic quality.

Changing the strap requires the use of a spring bar tool to remove the attachment pins. Position the watch with the strap facing downwards, insert the tool into the small hole on the spring, compress and extract the pin. Remove the old strap and insert the new one, ensuring that the pins are perfectly seated in the watch case holes. If you lack experience, consult a professional to avoid damaging the case.

Yes, provided the strap is compatible with the 16 mm lug width. Quality aftermarket straps (alligator, shell cordovan, calf leather) are entirely compatible with the 278288rbr-0022 and represent an excellent way to personalise the watch. Ensure that the strap is constructed from premium materials and that the passant width respects exactly 16 mm for safe and stable mounting.

The lifespan of a leather strap depends on the tanning quality, daily wear and climatic conditions. A premium alligator or shell cordovan, with vegetable tanning, may last between 3 and 5 years with regular wear, if the leather is protected from excessive heat and prolonged humidity. With proper maintenance and conscious use (alternating with other straps), longevity extends significantly. Rubber straps, conversely, offer greater resistance, up to 7–10 years.