Strap for Datejust 31 Yellow Gold / Domed / Grey - Diamond / Oyster

The lug width of the Datejust 31 278248-0035 is 16mm. This measurement is specific to the lugs of the 31mm case and is essential to ensure a proportionate and functional strap fit. Measuring this distance accurately is crucial to prevent play or binding when inserting the strap.

For a Datejust 31 in 18-carat yellow gold, alligator represents the most elegant choice, with polished black for formal occasions and brown for everyday versatility. Vegetable-tanned calf leather offers a practical alternative that develops an authentic patina complementing the natural oxidation of gold. For contemporary use, natural rubber in dark tones maintains elegance without sacrificing durability.

Changing the strap requires specific tools: a precision spring bar tool and a case holder. Position the watch horizontally, release the spring bar that secures the strap to the lug, slide the strap beneath the lug, and reinsert the spring bar. This is a delicate operation; if uncertain, it is advisable to entrust it to a specialised watchmaker to avoid damage to the case.

Yes, a bespoke strap with a 16mm lug width is perfectly compatible with the Datejust 31 278248-0035. The important thing is to verify that the strap is sized for this specific width and that the leather curve adapts correctly to the geometry of the 31mm case. Bespoke straps allow aesthetic customisation whilst maintaining full technical compatibility.

A high-quality leather strap, made from fine alligator or calf leather, has an average lifespan of 3-5 years with daily use, considering exposure to perspiration, moisture and friction. Vegetable-tanned leather tends to age more naturally, developing patina, whilst tinted leather maintains more stable colour. With periodic maintenance (cleaning and drying) and rotation with other straps, durability extends significantly.