Rolex Datejust 31 31 mm 278274GSO Steel/White Gold Dark Grey Rolex Datejust 31 31 mm 278274GSO Steel/White…

The Rolex Datejust is arguably the most iconic wristwatch ever produced, introduced in 1945 as the first self-winding wristwatch to display the date in a window at 3 o'clock. Over the decades it has been refined into a family of sizes and configurations, with the 31mm case occupying the sweet spot between the classic 28mm ladies' size and the 36mm unisex benchmark — making it one of the most versatile and sought-after references in the entire Rolex catalogue. The Datejust 31 continues to honor that legacy while incorporating every modern refinement Rolex has developed in case construction, bracelet engineering, and movement technology.

Reference 278274GSO pairs an Oystersteel case — Rolex's proprietary 904L stainless steel, celebrated for its exceptional corrosion resistance and mirror-bright polish — with white gold crown guards, a white gold fluted bezel, and a white gold Oyster bracelet center link, creating a harmonious two-tone aesthetic that is unmistakably Datejust. The 31mm case diameter strikes an ideal balance on a broad range of wrist sizes, sitting close to the wrist with the characteristic Oyster architecture that has defined Rolex sports and dress watches for generations. Water resistance to 100 meters (330 feet) is ensured by the screw-down Twinlock crown and the solid-link Oyster bracelet with a concealed folding Crownclasp.

The dark grey dial of the 278274GSO is one of its most compelling attributes. Dark grey is a contemporary, gender-neutral choice that reads as deeply sophisticated under artificial lighting and shifts subtly in natural daylight, revealing different depths and textures depending on the angle. It provides excellent contrast for the applied hour markers and hands — typically finished in white gold and coated with Chromalight luminescent material for legibility in low light — while allowing the date window with its discreet cyclops lens to remain instantly readable. The result is a dial that feels both understated and genuinely luxurious.

Beneath the case the watch is driven by an automatic movement, the hallmark of Rolex reliability. Rolex automatic movements are manufactured entirely in-house, featuring a Perpetual rotor that winds the mainspring through the natural motion of the wearer's wrist. The movement is chronometer-certified by the COSC (Contrôle Officiel Suisse des Chronomètres) and subsequently tested by Rolex to even tighter tolerances under its own standard, ensuring a precision standard that exceeds the official chronometer specification. The result is a watch you can set and forget, trusting it to keep time faithfully day after day.

The Oyster bracelet fitted to this reference is one of the most ergonomically advanced bracelets in watchmaking. Its three-piece link construction in Oystersteel delivers both robustness and supple comfort, while the Easylink rapid-extension system built into the clasp allows the wearer to adjust bracelet length by approximately 5mm — an invaluable feature through changing seasons or after physical activity. The concealed folding Crownclasp secures the bracelet discreetly and elegantly, maintaining the clean profile of the watch on the wrist.

Buying this certified authentic brand-new Rolex Datejust 31 reference 278274GSO from Bizak & Co. means acquiring a timepiece in pristine, unworn condition with all the quality assurances Rolex builds into every watch it produces. Bizak & Co. is a trusted independent luxury watch dealer specializing in genuine Rolex timepieces for discerning collectors and first-time buyers alike. Whether you are purchasing the 278274GSO as a personal milestone, a gift, or the foundation of a growing collection, our team is available to answer your questions and guide you through a seamless, confident purchase. Reach out today to make this exceptional Datejust 31 yours.