Rolex Datejust Everose Gold — Rose Index Dial | Ref. 278245

Calibre 2236 marks a watershed moment in Rolex's history of in-house movement manufacture: developed specifically for the 31 mm Datejust and Lady-Datejust families, it is the first self-winding movement Rolex designed expressly for a smaller case diameter. Reference 278245 showcases this engineering achievement within one of the most cohesive material pairings in the range — an 18-carat Everose gold case, domed bezel, and President bracelet surrounding a rose-toned dial with applied index markers. The monochrome harmony of warm rose gold and rose dial creates a watch that communicates understated sophistication without the need for gemstone embellishment.

The 2236 movement features Rolex's Syloxi hairspring, a silicon-based paramagnetic component engineered to a geometry that renders the oscillator virtually insensitive to temperature variation, gravity, and magnetic fields. Its 55-hour power reserve exceeds the 48 hours typical of earlier Rolex calibres in this class, providing comfortable autonomy through weekends and short trips. The Superlative Chronometer designation means each movement has been individually tested in the cased-up condition at the Rolex laboratory, guaranteeing deviation no greater than ±2 seconds per day — a standard exceeding ISO 3159 chronometer certification by a factor of four.

The President bracelet in 18-carat Everose gold is the definitive companion to this reference: its semi-circular three-piece links articulate fluidly, the concealed Crownclasp completing the unbroken arc of rose gold around the wrist. The domed bezel, free of fluting or gemstones, maintains the dial as the focal point, allowing the subtle warmth of the rose index markers and corresponding seconds hand to convey a composed, feminine elegance. At $28,785, the 278245 occupies a significant position in the Datejust hierarchy as an all-precious metal 31 mm reference with a movement purpose-built for its dimensions.