Rolex
Datejust 31 278241-0030— lug 16mm

The Rolex Datejust 31 ref. 278241-0030 has a lug width of 16mm. This measurement refers to the internal distance between the two case lugs and is the key parameter for selecting a compatible strap. All aftermarket straps must feature 16mm straight ends to fit correctly between the lugs.

For the Oystersteel/Everose bimetallic combination of the Datejust 31, smooth alligator straps in cognac, Bordeaux or chocolate tones complement the warm hues of the rose gold. Vegetable-tanned calf leather is ideal for daily wear, as it develops an authentic patina over time. Shell cordovan suits formal pairings. For sportier contexts, vulcanised rubber maintains aesthetic consistency without retaining moisture.

To replace the strap on the Datejust 31, a fine-tipped spring bar tool is required. The spring bars are compressed laterally into the dedicated slots within the lugs. It is advisable to work on a soft surface to avoid scratching the case. If the watch is fitted with the original Jubilee bracelet with micro-adjustment, strap removal requires the specific Rolex release pin or the assistance of a qualified watchmaker.

Yes. Any strap with a 16mm width and straight ends is compatible with the Datejust 31 ref. 278241-0030. Milano Straps offers a dedicated selection of handcrafted 16mm straps — in alligator, calf leather, shell cordovan and rubber — produced at the Casati Milano atelier. The buckle or deployant clasp can be chosen in steel, gold PVD or Everose gold to maintain consistency with the bimetallic case.

The lifespan of a leather strap depends on material quality and frequency of use. A high-quality alligator or calf strap with vegetable tanning and artisanal finishing has an average life of 2–4 years with regular wear. Avoiding prolonged contact with water, heavy perspiration and perfumes significantly extends the strap's life. Casati Milano offers an 18-month warranty against manufacturing defects on all atelier straps.