Reference 228345RBR-0008 presents the Day-Date 40 in a 40 mm Oyster case crafted from 18 kt Everose gold. The bezel is set with diamonds, while a scratch-resistant sapphire crystal with a Cyclops lens over the date protects the sundust dial beneath. A screw-down Twinlock winding crown and solid case back contribute to waterproofness to 100 metres / 330 feet.
The sundust dial is dressed with Roman numeral hour markers, and the watch displays the day and date in dedicated apertures via an instantaneous, secure rapid-setting mechanism. The President bracelet, composed of semi-circular three-piece links in 18 kt Everose gold, fastens with a concealed folding Crownclasp.
Powering the watch is the Calibre 3255 — a perpetual, mechanical, self-winding movement with bidirectional winding via a Perpetual rotor. It offers a precision rating of -2/+2 seconds per day after casing, a power reserve of approximately 70 hours, and features a paramagnetic blue Parachrom hairspring alongside high-performance Paraflex shock absorbers. The movement carries Superlative Chronometer certification, reflecting both COSC and Rolex post-casing standards.
