Strap for Datejust 31 Rolesor Everose Domed Diamond / Oyster / Purple Roman

The Rolex Datejust 31 reference 178341-0011 has a lug width of 16 mm. This measurement should be taken directly between the two case attachment points using a digital calliper or a lug-width gauge, not from the width of the original bracelet. Any compatible aftermarket strap must conform to the 16 mm specification to ensure a correct, play-free fit.

For the Datejust 31 in Everose Rolesor, alligator mississippiensis or vegetable-tanned calf leather straps are the most appropriate choices: they complement the warm tones of the rose gold and develop a distinctive patina over time. Shell cordovan is ideal for those seeking a compact, long-lasting surface. For less formal occasions, a nylon NATO strap lightens the look without compromising the watch's character. A deployant clasp is recommended on any material to distribute tension evenly and extend strap life.

To replace the strap, the spring bars securing the bracelet to the case lugs must be removed. Use a fine-tipped springbar tool: insert the tip into the lateral notch of the lug, compress the spring bar and slide the bracelet free. Reverse the process to fit the new strap. It is advisable to work on a soft surface to avoid scratching the case. If in doubt, a watchmaker can perform the operation in a matter of minutes.

Yes. Any strap with a 16 mm attachment and standard spring bars is compatible with the Datejust 31 178341-0011. Milano Straps offers a wide selection of handcrafted straps in this size, made from alligator, calf leather, shell cordovan and other fine materials. The Casati Milano atelier also provides a fully bespoke service, allowing the client to select leather, colour, stitching and clasp type in person.

The lifespan of a leather strap depends on the quality of the tanning, daily care and exposure to perspiration and external agents. A high-quality alligator or shell cordovan strap, with moderate daily use and proper maintenance — periodic application of leather conditioner and rotation with other straps — can last between three and seven years before requiring replacement. Casati Milano straps carry an 18-month guarantee against manufacturing defects.