Reference 128398TBR-0016 presents the Day-Date 36 in 18 kt yellow gold, its 36 mm Oyster case built around a monobloc middle case with a screw-down case back and screw-down Twinlock winding crown, offering waterproofness to 100 metres. The bezel is set with diamonds, while the scratch-resistant sapphire crystal features a Cyclops lens positioned over the date window for effortless legibility.
The white dial carries index hour markers and displays the day and date through instantaneous apertures with secure rapid-setting. Power comes from the Calibre 3255, a perpetual mechanical self-winding movement developed by Manufacture Rolex, offering a precision rating of -2/+2 seconds per day after casing, a power reserve of approximately 70 hours, and bidirectional winding via a Perpetual rotor. The oscillator employs a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers. The movement holds Superlative Chronometer certification, reflecting both COSC and Rolex's own post-casing standards.
The 18 kt yellow gold President bracelet with its semi-circular three-piece links closes via a concealed folding Crownclasp, completing a watch that is as much a statement of craft as it is a precise daily companion.
