Reference 128348RBR-0080 presents the Day-Date 36 in a 36 mm Oyster case crafted from 18 kt yellow gold, with a bezel set entirely with diamonds. The case architecture follows Rolex's Oyster construction: a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown that delivers waterproofness to 100 metres / 330 feet. A scratch-resistant sapphire crystal with a Cyclops lens over the date completes the case.
The champagne dial is itself set with diamonds, with 10 baguette-cut diamonds serving as hour markers. The President bracelet in 18 kt yellow gold features semi-circular three-piece links and fastens via a concealed folding Crownclasp, keeping the clean lines of the case uninterrupted on the wrist.
Inside beats the Calibre 3255, a perpetual mechanical self-winding movement made by Rolex. It offers a power reserve of approximately 70 hours, a precision rating of -2/+2 seconds per day after casing, and is certified as a Superlative Chronometer through both COSC and Rolex's own post-casing certification. The oscillator features a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers.
