Strap for Datejust 31 Yellow Gold Domed / President / Champagne Diamond

The Rolex Datejust 31 178248-0028 has a lug width of 16mm. This measurement is taken between the lugs at the point where they meet the case, and it is the dimension required when ordering a compatible aftermarket strap.

For the Datejust 31 in yellow gold, a vegetable-tanned alligator leather strap is the most coherent choice in a formal context: the natural grain complements the fluted bezel. Shell cordovan is ideal for those who prefer smooth, high-lustre surfaces, whilst vulcanised rubber suits sporting contexts. All materials must feature a 16mm attachment with a curved end to integrate correctly with the lug geometry.

To replace the strap on a Datejust 31, a quality flat-blade or lever-type spring bar tool is required. Insert the tool tip into the spring bar slot between the lug and the strap end, then compress each spring bar in sequence to release it without scratching the gold case. It is advisable to work on a soft surface and, if in doubt, to entrust the operation to a watchmaker or the Casati Milano atelier.

Yes. The aftermarket offers straps compatible with the Datejust 31 in 16mm. It is essential that the attachment end is shaped to match the specific curved lug profile of the 31mm Rolex case; otherwise, a lateral gap will appear between the strap and the case. Milanostraps.it offers 16mm straps crafted with this geometry, available online or customisable through the Casati Milano atelier.

The lifespan of a leather strap depends on the material and usage. A quality alligator strap with vegetable tanning and artisan finishing has an average lifespan of 2 to 4 years with daily wear, provided it is kept away from prolonged exposure to water and perspiration. Shell cordovan, owing to the dense fibre structure of the equine fibrous pad, tends to last longer, developing a distinctive patina over time. Casati Milano offers an 18-month guarantee against manufacturing defects.