Rolex Datejust 31 31 mm 278344RBRSSO Steel/White Gold/Diamonds Silver Rolex Datejust 31 31 mm 278344RBRSSO Steel/White…

The Rolex Datejust is one of the most enduring and recognizable watch designs in horological history, having debuted in 1945 as the first self-winding waterproof wristwatch to display the date in a window on the dial. Across more than seven decades it has remained virtually unchanged in its essential architecture while evolving steadily in materials, sizes, and finishing — a testament to a design so well resolved that little improvement was possible. The 31mm Datejust occupies a particularly thoughtful position in the collection, sized to suit a wide range of wrists while retaining every technical and aesthetic hallmark of the full-sized models.

The reference 278344RBRSSO pairs two of Rolex's most admired materials: Oystersteel, the brand's proprietary 904L stainless steel prized for its exceptional corrosion resistance and high polish, and 18k white gold, which lends warmth and prestige to the lugs, crown, and bezel setting. The diamond-set white gold domed bezel is the centerpiece of this reference, each stone precisely matched and set to maximize brilliance. It transforms the Datejust 31 into a genuine piece of jewelry without sacrificing its identity as a serious, everyday-capable watch.

The silver dial provides a cool, luminous backdrop that allows the hour markers and hands to read with excellent clarity. Silver dials in the Datejust family have a long and beloved history, and this iteration benefits from the added sparkle of diamond-set indices that catch the light from multiple angles. The overall composition — silver, white gold, and diamonds — is cohesive and refined, projecting quiet luxury rather than overt flashiness.

Powering the 278344RBRSSO is a Rolex automatic movement, a self-winding caliber built and certified entirely in-house to Rolex's exacting standards. Rolex movements at this tier are tested beyond standard chronometer certification, ensuring precision and reliability over the long term. The Oyster case provides water resistance to 100 meters (330 feet), meaning this watch is more than adequately protected for daily life including swimming and incidental water exposure.

The Oyster bracelet completes the package with its characteristic three-link design, combining center and outer links to produce a supple, secure, and elegant fit on the wrist. On a 31mm Datejust the Oyster bracelet imparts a sporty counterbalance to the dressy diamond bezel, making the watch equally at home at a business lunch or a formal dinner. The Easylink comfort extension clause allows micro-adjustment of the bracelet length, a practical detail that Rolex includes across its Oyster Professional and Datejust lines.

At Bizak and Co. we specialize in sourcing and presenting pre-owned and secondary-market Rolex timepieces of exactly this caliber. The Datejust 31 278344RBRSSO is a perennial favorite among collectors who value the combination of diamonds, white gold, and stainless steel in a wearable 31mm case. We invite you to contact our team directly to inquire about condition details, pricing, and availability, or to buy this reference online through bizakandco.com. Please note that Bizak and Co. is not an authorized Rolex dealer.