Rolex · Datejust 31
Strap for Datejust 31 Stainless Steel/ Rose Gold / Domed - Diamond / Grey - Roman / Jubilee
Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Datejust 31 278341rbr-0030
Selected for the 16 mm lug width
The Datejust 31 278341rbr-0030, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 ref. 278341rbr-0030?
The lug width of the Rolex Datejust 31 278341rbr-0030 is 16mm. This width is specific to the model and must be verified precisely using a digital calliper before purchasing an aftermarket strap. A 14mm or 18mm strap will not be compatible.
Which strap is recommended for the Rolex Datejust 31 278341rbr-0030?
For the 278341rbr-0030 in rose gold and steel, we recommend dark brown or havana alligator, vegetable-tanned calf leather in cognac or black, or shell cordovan for versatility. Alligator enhances sophistication; calf develops a rich patina over time; shell cordovan provides robust aesthetics.
How do I change the strap on the Rolex Datejust 31 278341rbr-0030?
To change the strap, you must remove the spring bars using a dedicated tool or multi-tool with a flat end. Position the tool beneath the spring bar, apply gentle inward pressure, extract the bar, then install the new strap ensuring it has a 16mm lug width. If inexperienced, consult an authorised watchmaker.
Is an aftermarket 16mm strap truly compatible with the Rolex Datejust 31 278341rbr-0030?
Yes, any strap with a 16mm lug width is compatible with the 278341rbr-0030. Always verify the specification before purchase. Handcrafted straps in alligator, calf, or shell cordovan from specialised suppliers respect this measurement. Quality construction ensures secure fit and longevity.
How long does a leather strap last on a Rolex Datejust 31 278341rbr-0030?
Leather strap lifespan varies according to material and usage. Alligator and shell cordovan typically last 3–5 years with regular wear. Vegetable-tanned calf resists 2–4 years before requiring replacement. Patina develops character over time; however, excessive wear (frequent perspiration, humidity) accelerates deterioration. Regular maintenance and protected storage extend usable life.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

