Strap for Datejust 31 Rose Gold / Diamond / MOP / President

The lug width (ansa measurement) of the Rolex Datejust 31 278285rbr-0005 is 16mm. This measurement represents the distance between the centres of the two lugs and is characteristic of this Everose gold Datejust 31 generation. Always verify this lug width before purchasing any aftermarket strap.

For the Datejust 31 in Everose gold, we recommend American alligator of first quality (uniform grain, evolving patina) or Normandy calf (pronounced grain, tactile character). For summer or sporty use, Japanese shell cordovan or technical FKM rubber. Everose gold naturally dialogues with warm tones (cognac, dark brown) or neutral shades (stone grey).

Strap replacement on the Datejust 31 requires specific tools (caseback opener and lever). Rolex recommends having the operation performed at an authorised service centre to avoid damage to the case. Milano Straps produces custom 16mm straps: you can entrust installation to a trusted watchmaker or request the bespoke service at the Casati Milano atelier by appointment.

Only straps with certified 16mm lug width are compatible without modifications. Standard 14mm or 18mm straps would require invasive case adjustments. Milano Straps offers a dedicated 16mm collection in various leathers (alligator, calf, cordovan) and finishes, verified for geometric compatibility with the Datejust 31.

A quality leather strap (alligator or cordovan) lasts an average of 3-5 years with daily wear, 5-8 years with occasional use. Longevity depends on maintenance (periodic cleaning, drying after moisture exposure) and climate use. Milano Straps guarantees 18 months against manufacturing defects; natural patina development on the strap is an aesthetic evolution phenomenon, not a defect.