Strap for Datejust 31 Yellow Gold Domed / President / Steel Roman

The Rolex Datejust 31 reference 178248-0092 features a 16-millimetre lug width. This specification is specific to the 31mm Datejust models and is narrower than larger cases within the family. To verify correct compatibility, measure the internal distance between the two articulation points where the strap attaches to the case.

For a yellow gold Datejust 31, alligator leather represents the most natural aesthetic choice, owing to its natural grain and the patina that develops over time. If you seek daily versatility, Italian box calf with vegetable tanning offers durability and an elegant satin texture. A burgundy shell cordovan works well for those who appreciate material ageing.

To change the strap, you must remove the spring bars that connect the strap to the case. Using a dedicated spring bar tool, compress the small internal springs of the pins to allow them to slide out of the lugs. Align the new strap with the lug holes and reinsert the pins until they lock into place with an audible click. If unfamiliar with the procedure, consult an authorised Rolex service centre.

Yes, a quality aftermarket strap represents an upgrade over standard Rolex-supplied models. It is essential that the lug width be precisely 16mm and that the strap be crafted from premium leathers such as alligator, shell cordovan, or vegetable-tanned calf. Milano Straps offers bespoke artisanal straps specifically designed for this specification.

Longevity depends on daily wear, humidity exposure, and leather type. Alligator can last 3–5 years with regular maintenance; Italian box calf 2–4 years; shell cordovan 4–6 years owing to its natural density. Leather is a living material that ennobles through ageing. With proper storage and periodic cleaning, the strap maintains structural integrity well beyond visible wear.