Strap for Datejust 31 Yellow Gold Diamond / Oyster / Champagne Computer

The Rolex Datejust 31 178288-0084 features a lug width of 16mm. This specific measurement was calibrated by Rolex for feminine wrist proportions and does not correspond to universal standards: many straps designed for different widths are incompatible. Before purchasing, verify that the strap has precisely 16mm width between the lugs.

For the yellow gold Datejust 31, noble natural materials offer optimal aesthetic dialogue. Polished alligator amplifies metal luminosity through its regular grain; vegetable-tanned leather develops patina that ages with dignity; shell cordovan, though rare at this width, combines visual solidity and tactile comfort. Choice depends on usage: formal (black alligator), versatile (cognac brown), personalised (burgundy or midnight blue).

The procedure requires a specific tool: a springbar removal tool. After removing the watch from your wrist, position it on a clean, padded surface. Insert the springbar tool into the small lateral opening beside the lug, apply gentle pressure to release the spring, then extract the metal bar. Repeat on the other side, insert the lugs into the new strap and reinsert the springbars until they click into place. If unfamiliar with the procedure, seek assistance from a qualified watchmaker or Casati Milano.

Yes, provided they are manufactured with the correct 16mm lug width. Artisanal aftermarket straps often offer superior quality to original Rolex straps and enable aesthetic and material personalisation. Always verify that the supplier explicitly specifies 16mm compatibility and provides warranty against manufacturing defects. Casati Milano offers bespoke 16mm straps with customised craftsmanship and 18-month warranty.

Durability depends on usage, material and environmental conditions. A vegetable-tanned leather strap, if properly maintained (dried after water contact, protected from prolonged sun exposure), can last 3-5 years with developing patina that improves with time. Alligator is more resistant and may reach 5-7 years. Natural leather is not designed to last as long as the Rolex case, yet its ageing is part of its appeal. Casati Milano warrants 18 months against manufacturing defects and offers reconditioning and replacement services.