Strap for Datejust 31 Stainless Steel Diamond / Jubilee / Silver - Diamond

The Rolex Datejust 31 reference 278384rbr-0034 has a lug width of 16mm. This measurement is taken with a calliper positioned internally between the two lower lugs of the case, at the point where the springbars are inserted. It is a fixed specification for the entire Datejust 31 family and requires straps of exactly 16mm at the attachment end.

For this white gold and steel model with a diamond-set bezel, alligator belly in neutral tones — ivory, pearl grey or cognac — provides the highest aesthetic consistency with the precious case materials. Smooth box-calf leather in burgundy or midnight blue offers a refined formal pairing. For versatile everyday wear, a vegetable-tanned leather strap develops a distinctive patina over time, highly appreciated by collectors.

To replace the strap, you need to remove the springbars connecting the bracelet or strap to the case lugs. A dedicated springbar tool is used, inserting the forked tip into the gap between the lug and the strap to compress and release the springbar. The operation requires care to avoid scratching the white gold lugs. For a watch of this value, it is advisable to entrust the operation to a qualified watchmaker or specialist atelier.

Yes. The Datejust 31 278384rbr-0034 uses a standard 16mm lug attachment compatible with any aftermarket strap of that width, provided the curvature of the strap end respects the profile of Rolex's Oyster lugs. Milano Straps offers a selection of handcrafted 16mm straps in various materials, all made with ends suitable for the Rolex Datejust 31 attachment.

Longevity depends on leather quality, daily use and exposure conditions. A high-quality alligator or shell cordovan strap, kept away from excessive perspiration and water, maintains its structural and aesthetic integrity for 3 to 5 years with regular wear. Vegetable-tanned straps tend to develop a patina over time, which many enthusiasts regard as a positive quality. Casati Milano straps carry an 18-month guarantee against manufacturing defects.