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

The Rolex Datejust 31 ref. 178344-0035 has a lug width of 16mm. This measurement is specific to the 31mm case size and differs from the Datejust 36mm or 41mm variants. Any replacement strap must have a 16mm attachment width to fit correctly.

For a Rolesor Datejust 31 with a fluted bezel and diamond-set dial, a vegetable-tanned alligator belly strap offers the most coherent material pairing. Box-calf leather is the most formal alternative, whilst shell cordovan develops a rich patina that complements white gold beautifully over time. For everyday wear, a NATO nylon strap or a vulcanised rubber strap provide practical durability without compromising the case.

The strap on the Datejust 31 is secured via spring bars fitted between the lugs. To remove it, use a spring bar tool to compress each bar inward at the lug opening. Work on a soft surface to prevent scratches to the case. If you are not confident performing this yourself, a watchmaker or the Casati Milano atelier can assist.

Yes. The aftermarket offers a wide range of 16mm straps compatible with the Datejust 31. Milano Straps provides a curated selection of handcrafted 16mm straps in leather, NATO, and rubber, finished to a standard befitting a Rolex timepiece. Always confirm that the spring bars included are compatible with the 16mm Rolex lug configuration.

The lifespan of a leather strap depends on material quality, construction, and daily use. A well-made alligator strap with vegetable tanning can last between two and five years with proper care: avoid prolonged contact with water and perspiration, rotate between straps, and apply a neutral leather conditioner periodically. Shell cordovan tends to last longer due to its dense fibre structure. Casati Milano offers an 18-month manufacturing warranty on all bespoke straps.