Rolex Lady-Datejust 31 31 mm 278243SDO Steel/Yellow Gold Silver

The Rolex Lady-Datejust is one of the most enduring icons in watchmaking, having defined the archetype of the elegant women's dress watch since its introduction in 1957 as the first waterproof and self-winding watch created specifically for women. Across decades and generations, the Lady-Datejust has remained a benchmark for refined precision, and the current 31mm generation represents the pinnacle of that heritage. Reference 278243SDO sits firmly within this legacy, pairing the versatility of Oystersteel with the warmth of 18k yellow gold to create a watch that transcends trends and seasons.

The 31mm Oyster case of reference 278243SDO occupies the sweet spot between the classic 28mm Lady-Datejust and the more assertive Datejust 36, making it an ideal choice for wearers who appreciate a confident yet thoroughly feminine presence on the wrist. Crafted from Oystersteel—Rolex's proprietary 904L stainless steel renowned for its exceptional corrosion resistance and brilliant polish—and accented with 18k yellow gold, the case achieves a balance of durability and luxury that few two-tone watches can match.

The silver dial is a masterclass in understated elegance. Clean, legible, and luminous, it allows the indices and hands to read with perfect clarity in any light. The yellow gold domed bezel frames the dial with a graceful convexity that is immediately recognizable as a Datejust signature, its smooth profile drawing the eye inward to the dial without distraction. Together, these elements create a visual harmony that rewards close attention.

Powering the watch is Rolex's automatic movement, the product of the brand's century-long pursuit of chronometric excellence. The movement is housed within an Oyster case rated to 100 meters (330 feet) of water resistance, meaning this Lady-Datejust is as practical as it is beautiful. The matching Oyster bracelet—with its flat three-piece links in matching two-tone steel and yellow gold—ensures the watch sits securely and comfortably on the wrist throughout any occasion.

At Bizak and Co., this Rolex Lady-Datejust 31 reference 278243SDO is offered in brand-new condition, certified authentic, and ready to be worn or gifted. Whether you are buying your first Rolex or adding a definitive two-tone Datejust to a curated collection, this reference represents an exceptional opportunity. Browse our inventory at bizakandco.com or reach out to our team directly—we are here to guide you through every step of your purchase.