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

The lug width (strap width) of the Rolex Datejust 31 278271-0002 is 16.00 mm. This measurement is crucial when selecting an aftermarket strap: any strap with a 16mm width will fit perfectly within the watch case lug opening, whilst different sizes (18mm, 20mm) are incompatible. The correct measurement is taken by placing the watch flat and measuring the internal distance between the two lugs with a digital caliper or millimetre ruler.

The Datejust 31 in two-tone rose gold and stainless steel demands straps in noble materials that age with integrity. Dark brown alligator (Hermès, Sartoria Marcella) enhances the rose gold without competing; Napa calfskin offers a compact grain and polished finish that captures the light reflected by the steel; brown cordovan evolves towards rich patina over time. Avoid synthetic leather and generic rubber: the Datejust deserves materials that breathe and noble with wear.

Strap replacement requires a spring bar tool (specific watchmaking instrument) and a stable work surface. Position the watch with lugs facing upward, insert the tool into the spring opening on the inside of the lug to release the pin, remove the old strap, then insert the new strap and re-insert the spring until it clicks into place. If you prefer professional assistance, Casati Milano provides personalised fitting services by appointment at the Milan atelier.

Yes, any 16mm strap is compatible with the Datejust 31 278271-0002. Milanostraps.it offers a curated selection of artisanal straps in alligator, calfskin, vegetable-tanned leather and specialty materials, all available in the 16mm width. Artisanal quality ensures that the strap dialogues proportionally with the two-tone rose gold and steel case, elevating the overall aesthetic of the watch.

The lifespan of a leather strap depends on the material, tanning method and frequency of wear. A quality artisanal alligator or calfskin strap, with vegetable tanning, endures 4–6 years with daily use, developing a noble patina that increases aesthetic value. An economy leather strap deteriorates within 12–18 months. Casati Milano guarantees 18 months against manufacturing defects; total lifespan depends on wrist climate and maintenance (avoid stagnant water, clean regularly, air-dry).