Rolex
Datejust 31 278343rbr-0002— lug 16mm

The lug width of the Rolex Datejust 31 ref. 278343rbr-0002 is precisely 16mm. This measurement represents the distance between the two spring bar attachments on the case and is essential for selecting a compatible strap. You can verify it with a calliper or by removing the original lug and measuring it directly. All 16mm straps are compatible with this model, regardless of material (leather, rubber, fabric).

For the Datejust 31 278343rbr-0002 we recommend alligator in dark burgundy or vegetable-tanned calf leather with aged patina: both create elegant visual contrast with the yellow Rolesor case. For daily use, grained calf or nautical fabrics ensure practicality. Your choice depends on personal style and context of use. An essential element: a yellow gold 18k deployant buckle amplifies the luxury appeal.

Changing the strap on a Datejust 31 is a simple and reversible operation. Position the watch with the caseback facing upwards, gently remove the original lug by lifting the spring bars with a dedicated tool. Once freed, remove the strap from the lugs. Insert the new strap and reactivate the spring bars using the same procedure. If you are not experienced, we recommend consulting a watchmaker or using the bespoke service Casati Milano offers.

Yes, any 16mm aftermarket strap is compatible with the Datejust 31 278343rbr-0002. The lug width is the construction standard: simply verify that it is respected. We recommend straps made from precious leather (alligator, calf, shell cordovan) with quality spring bars or deployant buckles in precious metal. A fine artisanal strap completely transforms the character of the watch, personalising it according to your taste.

The lifespan of a leather strap depends on material quality, tanning method and usage. Premium alligator or shell cordovan can last 5–8 years with regular wear; vegetable-tanned calf 3–5 years. Determining factors: sun exposure, humidity, perspiration, frequency of wear. Casati Milano straps, crafted from fine leather and with artisanal workmanship, come with an 18-month manufacturing defects warranty. To extend the lifespan, regularly apply specific balms and allow the strap to air-dry after humid exposures.