Strap for Datejust 31 Stainless Steel Domed Diamond / Jubilee / Pink

The lug width (misura ansa) of the Rolex Datejust 31 278344rbr-0016 is 16mm. This width is the standard for the Rolex ladies' segment and is compatible with all straps manufactured to this specification. When purchasing an aftermarket strap, always verify that the lug width matches 16mm to ensure perfect fitting on the watch lugs.

The Datejust 31 278344rbr-0016, featuring a Rolesor case in white gold and stainless steel, achieves its finest expression with premium natural materials. Nile alligator leather with vegetable tanning creates luminous synergy with white gold and develops natural patina over time. Shell cordovan from equine sources, also vegetable-tanned, develops golden reflections that amplify the case's dignity. For daily practicality, aniline calf leather or silk NATO straps offer versatility without aesthetic compromise.

Strap replacement on a Rolex Datejust 31 involves removing the spring bars (anse) from the case using a dedicated two-pronged tool. Work in good light, gently push the first spring bar pin inward toward the case centre until sufficient space is created to extract the lug. Repeat for the second pin. Once the lug is free, insert it into your new strap and re-insert into the case, ensuring both spring bar pins click into position. For inexperienced users, consult a professional to avoid case scratching.

Yes, aftermarket straps in 16mm width are fully compatible with the Datejust 31 278344rbr-0016, provided they meet the same dimensional tolerances. Artisanal-quality straps, such as those produced by Casati Milano, utilise the same standard Rolex spring bars and guarantee precise fitting without play. Choosing a high-quality aftermarket option permits personalisation while maintaining aesthetic and functional integrity.

A high-quality natural leather strap, such as alligator or shell cordovan with vegetable tanning, maintains structural integrity for 3–5 years under daily wear, depending on exposure to moisture, perspiration, and direct sunlight. Vegetable tanning develops patina rather than deteriorating, increasing aesthetic value. With proper maintenance—gentle cleaning with a damp cloth, rapid drying, and annual conditioning with natural waxes—longevity extends considerably. Artisanal straps from Casati Milano include an 18-month warranty covering manufacturing defects.