Strap for Datejust 31 Stainless Steel Domed Diamond / Oyster / Purple - Roman

The Rolex Datejust 31 ref. 178344-0016 has a lug width of 16 mm. This measurement refers to the internal distance between the lower lugs of the case and determines the correct width for any replacement strap. It is advisable to verify this with a calliper before purchasing.

For a two-tone white gold and steel case such as the 178344-0016, polished alligator leather and shell cordovan are the most suitable materials. Polished alligator reflects the brilliance of the bezel, while shell cordovan develops a patina over time that complements the restraint of the Oystersteel. Both are available in 16 mm width on milanostraps.it.

To replace the strap on the Datejust 31, you will need a fine-tipped springbar tool to remove the springbars securing the bracelet or strap to the lugs. Apply gentle pressure at the lug slot to compress the springbar, then slide the strap free. Care must be taken to avoid scratching the white gold surfaces. Alternatively, Casati Milano atelier can perform the fitting by appointment.

Yes. Milanostraps.it offers a curated selection of aftermarket straps in 16 mm width compatible with the Datejust 31. For the best fit against the case, curved-end straps are recommended, as they follow the profile of the Rolex lugs and ensure a seamless aesthetic transition. Available materials include alligator, calf leather, shell cordovan and rubber.

The longevity of a leather strap depends on the material, maintenance and frequency of use. A quality alligator strap, conditioned regularly with leather cream and kept away from excess moisture and perspiration, will maintain its structural and aesthetic integrity for 3 to 5 years of regular wear. Shell cordovan, owing to its dense fibre structure, generally lasts considerably longer. Casati Milano provides an 18-month guarantee against manufacturing defects on all handcrafted straps.