Rolex
Datejust 31 278273-0002— lug 16mm

The lug width of the Rolex Datejust 31 ref. 278273-0002 is 16 mm. This measurement should be taken with a digital calliper inside the two lugs, at the level of the spring bar, to ensure a precise fit with any replacement strap.

Given the two-tone steel and yellow gold combination of the ref. 278273-0002, alligator leather in cognac or dark brown best complements the fluted gold bezel. Shell cordovan in burgundy suits formal occasions, while vegetable-tanned calfskin develops a distinctive patina over time. For sport or water-resistant use, vulcanised rubber maintains the Oyster waterproofing integrity.

Strap replacement requires a spring bar tool to release the spring bars from the 16 mm lugs. Work on a soft surface to avoid scratching the Oystersteel case. The operation can also be carried out by a watchmaker or at the Casati Milano atelier, where the strap is fitted at the point of delivery.

Yes. The Datejust 31 ref. 278273-0002 features 16 mm curved-end lugs in the Oyster profile. Artisan aftermarket straps with shaped ends are available to match the original case curvature. Milano Straps offers a dedicated 16 mm selection in various materials and finishes, backed by an 18-month manufacturing warranty.

Longevity depends on material and daily use. A quality alligator strap, properly maintained — kept away from water and excessive perspiration, conditioned every 3 to 6 months — typically lasts 2 to 4 years. Shell cordovan offers superior resistance to repeated flexion. Vegetable-tanned calfskin develops patina but is more sensitive to moisture. Milano Straps provides an 18-month warranty against manufacturing defects.