Rolex Datejust 31 31 mm 278384RBRWRJ Steel/White Gold/Diamonds White

The Rolex Datejust is widely regarded as the archetype of the classic dress watch, having debuted in 1945 as the first self-winding wristwatch to display the date in a window at 3 o'clock. Over eight decades the Datejust has evolved in case size, material, and decoration while retaining its instantly recognizable silhouette, and the 31mm Datejust sits precisely between the 28mm ladies' model and the full-size 36mm, making it one of the most versatile references in the entire Rolex catalog. Reference 278384RBRWRJ represents the current generation of the Datejust 31, introduced under Rolex's unified naming convention that brought mid-size references under the 278xxx series.

The case of the 278384RBRWRJ measures 31mm in diameter and pairs Oystersteel—Rolex's proprietary 904L stainless steel chosen for its exceptional corrosion resistance and high polish retention—with 18k white gold components. The diamond-set bezel is one of the most striking design choices available on this reference, with individually selected stones set flush to frame the dial and catch the light from every angle. At 100 meters of water resistance the Oyster case maintains a hermetically sealed environment that protects the movement from dust and moisture in daily life.

The white dial carries Roman numeral hour markers, a detail that lends the watch an unmistakably classical character and nods to traditional horology. Roman numerals on a crisp white background create strong legibility while simultaneously evoking the aesthetic language of fine jewelry watches. The overall effect is a dial that is simultaneously restrained and opulent—an achievement that is central to the enduring appeal of the Datejust.

The Jubilee bracelet, originally created by Rolex specifically for the Datejust's 1945 debut, is composed of five links per row with a center link in a finer gauge than the outer links, giving it a supple, almost fabric-like drape on the wrist. On this reference the bracelet integrates white gold elements that echo the case construction, creating a seamless visual flow from lug to clasp. The result is a watch that wears with grace across a wide range of wrist sizes and lays flat without lifting at the lugs.

Powering the 278384RBRWRJ is a Rolex-certified automatic movement, built and regulated in-house to Rolex's Superlative Chronometer standard, which guarantees a precision of approximately −2/+2 seconds per day after casing—a level of accuracy that exceeds the standard COSC certification. The movement oscillates on a Parachrom hairspring that is highly resistant to magnetic fields and temperature variation, and a Paraflex shock absorber further reinforces reliability in daily wear.

At Bizak and Co. we source this reference with the same care we apply to every timepiece in our inventory, and our team of specialists is available to answer detailed questions about condition, provenance, and finishing before you commit to a purchase. Whether you are acquiring the Rolex Datejust 31 278384RBRWRJ as a personal milestone piece, a gift, or a considered addition to a collection, we invite you to contact Bizak and Co. to discuss availability and secure this exceptional reference today.