Strap for Datejust 31 Yellow Gold / Fluted / Silver - Roman / Oyster

The Rolex Datejust 31 reference 278278-0027 features a lug width of 16 millimetres. This dimension defines compatibility with any aftermarket strap for this specific model. Measuring the lug width correctly is essential before ordering a replacement strap: measure the distance between the two lugs where the strap fits onto the case.

For a Rolex Datejust 31 278278-0027 in yellow gold, we recommend an alligator strap with fine grain and minimalist venation, or shell cordovan that develops a luminous patina over time. Vegetable-tanned calf leather offers the most versatile option if you prefer initial softness and colour flexibility. Ideal colour pairing is dark brown, cognac or deep black depending on your wearing context.

Strap replacement requires a spring bar remover tool to extract the articulation pins from the case lugs. We recommend entrusting this operation to a qualified professional to avoid scratching the gold case. Casati Milano offers installation services at its Milan atelier: you can also order the strap online and have it fitted later at the boutique.

Original Rolex straps feature a solid yellow gold clasp or deployant, ensuring material cohesion and leather texture conforming to Maison standards. Artisanal aftermarket straps of superior quality (such as those by Casati Milano) offer exclusive leather choices, personalised tailored construction and often superior durability thanks to vegetable tanning techniques. The substantial difference lies in design freedom and the use of hand-selected noble materials.

Leather strap durability depends on tanning quality and daily use. An alligator or shell cordovan strap with vegetable tanning lasts an average of 5-7 years of regular wear, developing a fascinating patina over time. Traditionally-tanned calf leather resists 3-4 years before replacement becomes necessary. Care is decisive: keep the strap dry, avoid prolonged humidity exposure and clean periodically with a soft cloth. Casati Milano guarantees 18 months against manufacturing defects.