Rolex Datejust 31 31 mm 278344RBRSDJ Steel/White Gold/Diamonds Silver

The Rolex Datejust is arguably the most iconic dress watch ever created, introduced in 1945 as the first self-winding wristwatch to display the date in a magnified window on the dial. Over eight decades the design has remained immediately recognizable while evolving to embrace new materials, sizes, and levels of gem-setting artistry. The Datejust 31 occupies a refined midsize position—generous enough to read boldly on the wrist yet perfectly scaled for those who prefer elegance over statement.

Reference 278344RBR represents the Datejust 31 at its most opulent. The case measures 31mm in diameter and is constructed from a combination of Oystersteel, Rolex's proprietary corrosion-resistant steel alloy, and 18k white gold—a pairing that lends the watch a cool, luminous two-tone character. Water resistant to 100 meters (330 feet) thanks to the screw-down Oyster case architecture, this is a watch built to the same exacting standards as every Rolex in the catalog.

The dial is silver and set with diamonds, creating a surface that catches light from every angle and elevates the watch well beyond a simple timekeeping instrument. Framing that dial is a white gold domed bezel entirely pavéd with brilliant-cut diamonds, a detail that unifies the gem-set theme and adds a halo of brilliance around the entire case. Together, dial and bezel make reference 278344RBR one of the most jewel-intensive configurations available in the midsize Datejust family.

Power comes from Rolex's automatic movement, a self-winding caliber that winds through the motion of the wearer's wrist and is regulated to chronometric precision standards. The movement is housed within the trademark Oyster case, sealed by a screw-down crown and caseback to protect the movement reliably in daily wear. Connecting case to wrist is the celebrated five-piece Jubilee bracelet in matching Oystersteel and white gold, a design first introduced by Rolex in 1945 alongside the original Datejust and universally praised for its smooth, flexible comfort.

On the wrist, the 278344RBR projects refined glamour without ostentation—the 31mm case sits close and flat, while the Jubilee bracelet contours naturally to the wrist. This reference transitions effortlessly from boardroom to black-tie, making it an ideal companion for women who demand both versatility and luxury from a single timepiece. Its combination of precious metals, diamond setting, and Rolex's legendary build quality also underpins its strong long-term desirability in the pre-owned market.

At Bizak & Co. we source and present pre-owned and grey-market Rolex watches with the expertise and transparency you deserve. Whether you are adding reference 278344RBR to a growing collection or purchasing your first luxury watch, our team is ready to guide you through every detail. Reach out to Bizak & Co. at bizakandco.com to inquire, buy online, or arrange a closer look at this exceptional Rolex Datejust 31.