Strap for Datejust 31 Stainless Steel Domed Diamond / Jubilee / Blue

The Rolex Datejust 31 reference 178344-0046 has a lug width of 16mm. This measurement should be taken with a digital calliper at the narrowest point between the lugs to ensure a precise fit for any aftermarket strap.

For the Datejust 31 in white gold and steel, a vegetable-tanned alligator strap is the most coherent choice given the watch's horological pedigree. Box-calf leather offers understated elegance and improves with wear. For more active use, a vulcanised rubber strap with a tang buckle provides durability without compromising the case profile.

To replace the strap on the Datejust 31, you will need a 1.8mm springbar tool to release the spring bars from the lugs. Work on a soft surface to protect the case and bezel, and ensure replacement spring bars match the 16mm width and correct length required by this reference.

Yes. Milano Straps offers a curated selection of handcrafted 16mm aftermarket straps compatible with the Datejust 31, available in alligator, box-calf, shell cordovan and other premium leathers. Each strap is built to precise tolerances to ensure a secure and aesthetically consistent fit on Rolex lugs.

The lifespan of a leather strap depends on the material, tanning method and frequency of wear. A quality vegetable-tanned alligator or calf strap, properly maintained with a light leather conditioner every three to four months and rotated with other straps, can last between three and six years while developing an attractive patina. Casati Milano straps carry an 18-month warranty against manufacturing defects.