Rolex Datejust 31 31 mm 278384RBRBKRO Steel/White Gold/Diamonds Black

The Rolex Datejust is widely regarded as the archetype of the classic dress watch, a lineage that stretches back to 1945 when Rolex introduced the world's first self-winding wristwatch to display the date in a window at 3 o'clock. Across more than seven decades the Datejust has remained in continuous production, evolving in materials and proportions while preserving the timeless silhouette that made it iconic. The 31 mm case size occupies an elegant middle ground, larger than a traditional ladies' watch yet refined enough to sit gracefully on a broad range of wrists, making it one of the most versatile expressions of the collection.

Reference 278384RBRBKRO brings together some of the most desirable design elements Rolex offers in the Datejust 31 family. The case and bracelet are constructed in Rolex's proprietary Oystersteel, a corrosion-resistant 904L stainless steel alloy, paired with 18k white gold accents that elevate the piece into genuine two-tone luxury territory. The combination gives the watch a cool, luminous quality that suits both silver-toned and mixed-metal jewellery wardrobes effortlessly.

The dial is a bright black finish set with Roman numerals, a choice that communicates heritage and legibility in equal measure. Roman numerals have appeared on dress watches for centuries, and their presence here anchors the 278384RBRBKRO firmly in classical watchmaking tradition while the high-contrast black background ensures the chapter ring reads crisply in any light. The date aperture at 3 o'clock, Rolex's signature Cyclops lens magnifying the date 2.5x, completes a dial that is both functional and visually arresting.

The bezel of reference 278384RBRBKRO is set with diamonds, adding a continuous circuit of brilliant-cut stones that catch light from every angle and reinforce the watch's jewellery-grade credentials. The Oyster bracelet, one of the most robust and recognisable bracelets in watchmaking, secures the watch comfortably on the wrist and is finished to match the two-tone aesthetic of the case. Powering the watch is an automatic movement, ensuring the convenience of self-winding mechanics without the need to wind the crown each day, and the case is rated to 100 metres of water resistance, meaning the Oyster case's hermetic integrity protects the movement through everyday use including hand-washing and brief water exposure.

At Bizak and Co. we source and present pre-owned and unworn luxury timepieces to the highest standards, and reference 278384RBRBKRO represents exactly the kind of rare, appointment-worthy piece our clients seek. Whether you are adding a jewellery watch to a curated collection, purchasing a milestone gift, or simply investing in a piece with the enduring demand that Datejust references consistently command on the secondary market, this watch merits serious consideration. Contact the Bizak and Co. team through bizakandco.com for current availability, condition details, and pricing, and let our specialists guide you through buying this Rolex Datejust 31 online with confidence.