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

The lug width of the Rolex Datejust 31 278343rbr-0017 is 16mm. This specific measurement is standard for the Rolex 31mm ladies calibre. Compatible spring bar pins have a diameter of 1.80mm or 2.00mm, so technical compatibility verification is essential when purchasing a strap. MilanoStraps offers the complete collection of straps certified for this size.

For a Datejust 31 in Rolesor (steel and yellow gold), alligator leather with vegetable tanning represents the most aesthetically appropriate choice: regular scales enhance the warm tones of gold. Calf leather offers versatility and modern texture, while Japanese shell cordovan develops a patina that synchronises with the natural ageing of the case. Each material creates a different visual dialogue with the dual-material nature of the Rolesor.

Strap replacement requires specific tools: a spring bar tool, an anti-scratch work surface, and careful handling of the pins. Remove the spring bar pins from the case lugs, extract the old strap and insert the new one by aligning the lug holes with the pins. If you are unsure, contact an authorised Rolex service centre or an experienced watchmaker. Casati Milano offers the replacement service by appointment.

Any strap with a 16mm lug width and 1.80mm or 2.00mm pins is compatible. The artisanal straps in alligator, calf, shell cordovan and FKM rubber available on MilanoStraps are manufactured to Rolex technical specifications. Always verify spring bar pin diameter before purchase to avoid mismatches.

A fine leather strap (alligator, calf, shell cordovan) with vegetable tanning lasts an average of 3-5 years with moderate daily wear. Exposure to perspiration, humidity and UV rays accelerates deterioration. Casati Milano guarantees 18 months on manufacturing defects and provides maintenance advice: cleaning with a soft damp cloth, protection with natural waxes, rotation with other straps to distribute stress.