The Rolex Day-Date 40 reference 228348RBR is a powerful statement of prestige and refinement. Crafted in 18 kt yellow gold, the 40 mm Oyster case is enhanced by a diamond-set bezel that radiates brilliance. The striking green dial delivers bold character while maintaining exceptional legibility, complemented by the iconic day display at 12 o’clock and date at 3 o’clock.
At its heart beats the Manufacture Rolex Calibre 3255, a perpetual, mechanical, self-winding movement engineered for superior precision of -2/+2 seconds per day after casing. Equipped with a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers, it offers reliability and robustness alongside a 70-hour power reserve. The timepiece is completed with the legendary President bracelet in 18 kt yellow gold, fitted with a concealed folding Crownclasp for seamless elegance.
Specifications:
Reference: 228348RBR
Collection: Day-Date 40
Case: Oyster, 40 mm, yellow gold and diamonds
Oyster Architecture: Monobloc middle case, screw-down case back and winding crown
Diameter: 40 mm
Material: 18 kt yellow gold
Bezel: Set with diamonds
Winding Crown: Screw-down, Twinlock double waterproofness system
Crystal: Scratch-resistant sapphire, Cyclops lens over the date
Water Resistance: Waterproof to 100 metres/330 feet
Movement: Perpetual, mechanical, self-winding
Calibre: 3255, Manufacture Rolex
Precision: -2/+2 sec/day, after casing
Functions: Centre hour, minute and seconds hands; instantaneous day and date in apertures, secure rapid-setting; stop-seconds for exact time setting
Oscillator: Paramagnetic blue Parachrom hairspring; high-performance Paraflex shock absorbers
Winding: Bidirectional self-winding via Perpetual rotor
Power Reserve: Approximately 70 hours
Bracelet: President, semi-circular three-piece links
Bracelet Material: 18 kt yellow gold
Clasp: Concealed folding Crownclasp
Dial: Green
