Rolex · Datejust 31
Strap for Datejust 31 Yellow Gold Diamond / President / Black MOP
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 178288-0045
Selected for the 16 mm lug width
The Datejust 31 178288-0045, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 178288-0045?
The lug width of the Rolex Datejust 31 reference 178288-0045 is 16 millimetres. This measurement represents the internal distance between the two lugs on the case and is critical for strap compatibility. A strap of different width will not fit properly and may damage the yellow gold lugs on the case.
What is the best strap for the Rolex Datejust 31 178288-0045?
For the Datejust 31 178288-0045 in yellow gold, we recommend alligator leather in dark brown tones or calf leather with vegetable tanning in amber hues. Alligator offers a regular grain and develops a noble patina over time, while vegetable-tanned leather guarantees sustainability and warm colourways that naturally complement 18-carat gold. The choice depends on your use case: formal versus daily wear.
How do you change the strap on the Rolex Datejust 31 178288-0045?
Strap replacement requires specific tools. Position the watch on a soft surface with the case back facing upward. Use an appropriate small flathead screwdriver to gently extract the spring bar securing the lug from the case. Repeat on both sides. Insert the lugs into the new strap following the same procedure in reverse. For the 178288-0045, we recommend having this operation performed by an authorised Rolex service centre or an experienced watchmaker to avoid damage to the yellow gold case.
Is there an aftermarket strap compatible with the Datejust 31 178288-0045?
Yes, but with discernment. Any quality strap with a 16-millimetre lug width is technically compatible. However, leather quality, finishing and tactile feel vary enormously. We recommend premium leathers such as alligator, shell cordovan or vegetable-tanned calf, as the Datejust 31 in yellow gold deserves a strap worthy of its construction. Avoid synthetic or inferior-quality leather straps, as they diminish the overall experience. A bespoke strap made-to-measure by a specialist atelier guarantees maximum quality and personalisation.
How long does a leather strap last on the Rolex Datejust 31 178288-0045?
Leather strap longevity depends on material quality, frequency of wear and environmental conditions. A high-quality alligator or shell cordovan strap, worn daily, typically lasts 3–5 years before replacement due to natural wear. Vegetable-tanned leather tends to last slightly less (2–4 years) than dyed leathers. Factors such as perspiration, prolonged moisture exposure and direct sunlight accelerate ageing. A bespoke strap crafted using artisanal techniques can be remade or restored, extending its useful life indefinitely.
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

