Rolex
Datejust 31 278243-0013— lug 16mm

The Rolex Datejust 31 reference 278243-0013 has a lug width of 16mm. This measurement should be taken with a digital calliper between the inner surfaces of the lower lugs on the Oyster case. It is essential to use straps with an exact 16mm attachment to ensure correct alignment and fit.

For the Datejust 31 278243-0013 in yellow gold and steel Rolesor, a vegetable-tanned alligator strap with a yellow gold buckle or deployant clasp is the most coherent choice for the watch's formal register. Alternatively, shell cordovan with a smooth finish pairs discreetly with the two-tone case. For casual settings, grained calf leather or a technical NATO strap offer versatility without compromising the aesthetic.

To replace the strap or bracelet on the Datejust 31 278243-0013, use a precision spring bar tool with a 1mm tip, inserted into the hole on the lower lug of the Oyster case. Take care not to scratch the Rolesor case: protect the lugs with PTFE tape and work on a watchmaker's mat. The spring bar must be compressed laterally to release from its seats.

Yes. The Rolex Datejust 31 278243-0013 accepts any strap with a 16mm attachment and standard 1mm spring bars. Milanostraps.it offers a selection of handcrafted compatible straps, tailored to the 16mm lugs of this case, available in various materials and finishes. The Casati Milano atelier also provides a bespoke service with in-person leather selection.

The lifespan of a leather strap depends on the material, tanning quality and daily use. A high-quality vegetable-tanned alligator strap, properly maintained (avoid prolonged moisture, apply conditioning cream every 3-4 months), will retain its structure and appearance for 3-5 years of regular wear. Shell cordovan offers superior flex resistance and tends to last longer, developing a distinctive patina over time. Milanostraps.it guarantees its straps for 18 months against manufacturing defects.