Rolex
Datejust 31 278275-0027— lug 16mm

The Rolex Datejust 31 ref. 278275-0027 features a 16mm lug width. This measurement is specific to the 31mm case and differs from the 20mm of the Datejust 41. To verify it accurately, use a digital calliper to measure the internal gap between the two lugs with the strap removed.

For the Everose gold case of the ref. 278275-0027, the most suitable materials are Porosus alligator leather in burgundy or cognac tones, shell cordovan for a compact surface with noble ageing, and Tuscan vegetable-tanned calf for a more versatile everyday character. A rose gold deployant clasp ensures metallic coherence and even pressure distribution.

To replace the strap, use a fine-tipped springbar tool with a 0.8mm point. Insert the tool into the lug hole, compress the springbar inward and slide the strap off the lug horn. Repeat on the other side. On a rose gold case, it is advisable to protect the lugs with ptfe tape or fabric to avoid micro-scratches during the operation.

Yes. Any strap with a 16mm attachment is compatible with the Datejust 31 ref. 278275-0027. Milano Straps offers a curated selection of handcrafted 16mm straps in various materials and finishes, made with selected leathers and hand stitching, available with or without a bespoke deployant clasp.

Longevity depends on the material, frequency of wear and exposure to perspiration and moisture. A quality alligator strap, used in rotation and maintained with nourishing cream, can last between 3 and 6 years. Shell cordovan, being denser, tends to last longer. Vegetable-tanned calf requires more care but develops a distinctive patina over time.