Strap for Datejust 31 Yellow Gold Fluted / Oyster / Silver Computer

The Rolex Datejust 31 178278-0031 has a lug width of 16mm. This is a non-standard measurement requiring dedicated straps. Always verify the internal lug-to-lug width with a digital calliper before purchasing any aftermarket strap.

For the yellow gold Datejust 31 178278-0031, hornback or belly alligator leather is the most coherent choice for the watch's calibre. Shell cordovan develops an outstanding patina over time. For daily or aquatic use, vulcanised rubber provides full water resistance without compromising aesthetics.

Strap replacement requires a fine-tipped springbar tool to remove the fixing bars without scratching the gold lugs. Work on a soft surface and, if inexperienced, entrust the operation to a watchmaker or the Casati Milano atelier to avoid any cosmetic damage to the case.

Yes. Custom-made aftermarket straps with a 16mm attachment are the most versatile and personalised solution. Milano Straps offers a curated selection of 16mm straps compatible with the Datejust 31, available online or fully bespoke through the Casati Milano atelier.

Longevity depends on the material and frequency of use. A quality alligator strap, properly maintained and rotated with other straps, typically lasts 3–5 years. Shell cordovan, owing to its dense fibre structure, can exceed 5 years. Vegetable-tanned leather develops patina and improves with age if kept away from excessive moisture. Casati Milano provides an 18-month production warranty on all its straps.