Strap for Datejust 31 Stainless Steel / Yellow Gold / Fluted / Grey - Diamond / Jubilee

The Rolex Datejust 31 ref. 278273-0022 has a lug width of 16mm. This measurement is consistent across all production examples of this reference and is taken as the internal distance between the two lugs at the lower part of the case, ideally measured with a digital calliper for maximum accuracy.

For the Datejust 31 in yellow Rolesor (steel and yellow gold), alligator belly straps in cognac or tobacco tones complement the gold bezel and lend a distinctly dressy character. Vegetable-tanned calf leather is well suited to daily wear, while shell cordovan pairs particularly well with diamond-set dials. In all cases, the strap must have a 16mm attachment width with curved ends to follow the case profile.

To replace the strap on the Datejust 31, the spring bars connecting the bracelet or strap to the case lugs must be removed. A spring bar tool is inserted into the lateral lug hole to compress the springs and release the bar. It is advisable to work on a soft surface to prevent scratches to the Oystersteel case. Alternatively, a watchmaker or the Casati Milano atelier can perform the operation safely.

Yes. Any strap with a standard 16mm attachment and spring bars is technically compatible with the Datejust 31 278273-0022. For the best aesthetic result, straps with curved or tapered ends that follow the Oyster case profile are recommended. Milano Straps offers a curated selection of handcrafted 16mm straps in leather, alligator, shell cordovan and technical materials.

The lifespan of a leather strap depends on the type of leather, frequency of wear and environmental conditions. A quality alligator strap, properly maintained and rotated with other straps, can last between three and five years while retaining its aesthetic qualities. Vegetable-tanned calf develops a patina over time but is more sensitive to moisture; shell cordovan is the most durable due to the compact nature of its fibres. Casati Milano straps carry an 18-month warranty against manufacturing defects.