Strap for Datejust 31 Stainless Steel / Yellow Gold / Domed / Black MOP / Oyster

The lug width of the Rolex Datejust 31 ref. 278243-0023 is 16 millimetres. This measurement is specific to this model and is not compatible with straps designed for other lug widths (14mm, 18mm, 20mm). To measure the lug width, use a digital calliper and measure between the two pins that connect the strap to the case.

For the Datejust 31 with a mother-of-pearl dial, recommended materials include: black alligator for classic contrast, vegetable-tanned calf leather in brown and cognac tones for natural patina development, shell cordovan for durability and luxury appeal, and FKM rubber for summer wear. Your choice depends on personal style and intended use. Alligator remains the most noble option.

Changing a Rolex strap requires using a springbar remover tool to detach the elastic pins that connect the strap to the case. If you lack experience, we recommend consulting a professional watchmaker. Casati Milano also provides this service at the atelier by appointment, ensuring maximum care for your timepiece.

Yes, high-quality aftermarket straps are fully compatible with the Datejust 31 ref. 278243-0023, provided they feature a 16mm lug width and use standard pins. Milano Straps offers a curated selection of artisanal leather straps crafted by master artisans, guaranteeing compatibility, durability, and aesthetic performance that exceeds standard offerings.

The lifespan of a leather strap depends on material quality, tanning method, and usage patterns. An artisanal alligator or shell cordovan strap of premium quality typically lasts 3-5 years with daily wear. Vegetable-tanned leather may last longer, developing a desirable patina over time. With Milano Straps, you receive an 18-month warranty on manufacturing defects and benefit from craftsmanship that naturally extends product longevity.