Reference 128398TBR-0030 presents the Day-Date 36 at its most lavish: a 36 mm Oyster case crafted from 18 kt yellow gold with a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown delivering waterproofness to 100 metres. The bezel is set with diamonds, while scratch-resistant sapphire crystal with a Cyclops lens over the date completes the case.
The dial is white mother-of-pearl set with diamonds, with 10 baguette-cut diamonds marking the hours — a composition that plays beautifully against the warm tone of the yellow gold. The President bracelet in 18 kt yellow gold features the signature semi-circular three-piece links and closes with a concealed folding Crownclasp.
Power comes from Rolex Calibre 3255, a perpetual, mechanical, self-winding movement offering approximately 70 hours of power reserve and a precision rating of -2/+2 seconds per day after casing. The oscillator uses a paramagnetic blue Parachrom hairspring alongside high-performance Paraflex shock absorbers, and the watch carries Superlative Chronometer certification reflecting both COSC and Rolex's own post-casing standards.
