Crafted from 18 kt white gold, the 40 mm Oyster case of reference 228349RBR-0003 features a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown delivering waterproofness to 100 metres / 330 feet. A scratch-resistant sapphire crystal with a Cyclops lens over the date keeps the display clearly legible, while the diamond-set bezel adds a concentrated ring of brilliance around the watch.
The bright black dial is itself set with 10 baguette-cut diamonds at the hour positions, creating a striking interplay of deep color and gemstone light. Day and date are shown simultaneously in apertures with instantaneous, secure rapid-setting, and a stop-seconds function allows precise time adjustment.
Powering the watch is the Calibre 3255, a perpetual mechanical self-winding movement manufactured by Rolex and certified as a Superlative Chronometer to a precision of -2/+2 seconds per day after casing. The oscillator features a paramagnetic blue Parachrom hairspring and Paraflex shock absorbers, with bidirectional winding via a Perpetual rotor providing a power reserve of approximately 70 hours. The 18 kt white gold President bracelet closes with a concealed folding Crownclasp.
