This replica Datejust 278274 blue pairs a 31mm Oystersteel case with Roman numeral indices on a blue sunburst dial. The 278274 reference belongs to the current-generation Lady-Datejust, sized at 31mm and powered by the Caliber 2236 with its silicon Syloxi hairspring. Blue dials with Roman numerals give the watch a classical personality that distinguishes it from the more common stick-index versions. At 31mm, the Roman markers are proportionally scaled to remain legible without crowding the dial, and the blue sunburst finish adds color depth that shifts with ambient light throughout the day.

Technical Overview

• Case diameter: 31mm
• Case material: Oystersteel
• Dial: blue sunburst with Roman numeral indices
• Bezel: fluted white gold
• Crystal: sapphire with Cyclops magnification
• Movement: automatic Caliber 2236
• Water resistance: 100 meters

The 278274 replaced the older 178274 reference, bringing the updated 2236 movement and slightly revised case proportions. The fluted bezel on this reference is white gold, which provides a brighter, sharper edge definition than a steel bezel would.

Inside the Movement

The Caliber 2236 features a Syloxi hairspring made from silicon, making it virtually immune to magnetic interference. Power reserve reaches approximately 55 hours, and the movement includes a quickset date function accessible through the crown. The rolex datejust 31 platform in the 278-series represents a meaningful mechanical upgrade over earlier Lady-Datejust generations. For the same Roman-numeral aesthetic in a larger 41mm format, compare against the 126334 with diamond dial on Jubilee. Both are part of the broader Datejust family, but the size difference creates a completely different wrist experience.

What Sets It Apart

Blue-dial Roman-numeral Datejust references occupy a specific niche: they are formal enough for dressy settings but not so ornate that they feel out of place with everyday clothing. The 31mm size keeps the watch feminine without going into the jewelry-watch territory that diamond-set dials enter. Roman numerals also give the dial a more structured layout than stick markers, which is why many buyers gravitate toward this configuration when they want something with more visual character. This replica Datejust 278274 blue delivers that specific combination in the current-generation case architecture.