Reference 228396TBR-0042 presents the Day-Date 40 in a 40 mm Oyster case crafted from platinum and set with diamonds on the bezel. The monobloc middle case is completed by a screw-down case back and a screw-down Twinlock winding crown, offering water resistance to 100 metres / 330 feet. A scratch-resistant sapphire crystal with a Cyclops lens over the date sits above the dial.
The blue ombré dial is dressed with Roman numeral hour markers, giving the watch a classically formal character. The platinum President bracelet features semi-circular three-piece links and fastens with a concealed folding Crownclasp, maintaining the clean lines of the case and dial.
Power comes from the Calibre 3255, a perpetual mechanical self-winding movement from Manufacture Rolex. It delivers a precision of -2/+2 seconds per day after casing, a power reserve of approximately 70 hours, and is driven by a bidirectional Perpetual rotor. The oscillator incorporates a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers. The movement holds Superlative Chronometer status, reflecting both COSC and Rolex certification after casing.
