Rolex
Datejust 31 178243-0057— lug 16mm

The lug width of the Rolex Datejust 31 reference 178243-0057 is 16mm. This is a non-standard measurement in the watch industry, so it is essential to verify compatibility carefully before purchasing an aftermarket strap.

For the 178243-0057 in Yellow Rolesor, a vegetable-tanned alligator strap in cognac, tobacco or burgundy tones is the most coherent choice with the character of the case. Smooth calf leather and shell cordovan are valid alternatives for a more understated look. In sporting contexts, a NATO or vulcanised rubber strap offers protection and practicality.

To replace the strap on the Datejust 31, you will need a springbar tool or pin tool to release the spring bars from the 16mm lugs. It is advisable to work on a soft cushion to protect the case, taking particular care around the yellow gold components. Alternatively, the operation can be carried out by a watchmaker or at the Casati Milano atelier.

Yes. Milanostraps.it offers a curated selection of 16mm aftermarket straps compatible with the Datejust 31 178243-0057, crafted in alligator, calf leather, shell cordovan, NATO fabric and rubber. Each strap is handcrafted and supplied with spring bars sized for the 16mm lug width of this reference.

The lifespan of a leather strap depends on the quality of the hide, the tanning process and usage conditions. A high-quality vegetable-tanned alligator or calf strap, properly maintained (avoiding prolonged contact with water and perspiration and using a suitable leather conditioner), can last between 3 and 7 years while developing a distinguished patina. Using a deployant clasp rather than a traditional buckle significantly extends the strap's life.