Housed in a 40 mm 18 kt yellow gold Oyster case, the Day-Date 40 ref. 228398TBR-0036 features a monobloc middle case, screw-down case back, and a screw-down winding crown with Twinlock double waterproofness system. Scratch-resistant sapphire crystal with a Cyclops lens over the date protects the dial, and the watch is waterproof to 100 metres / 330 feet. The bezel is set with diamonds, adding further brilliance to the yellow gold case.
The diamond-paved dial is appointed with 10 baguette-cut diamonds at the hour markers, presenting an exceptionally gem-forward face. The 18 kt yellow gold President bracelet, with its semi-circular three-piece links and concealed folding Crownclasp, completes the watch with a look that has long defined the Day-Date's standing.
Inside, the Calibre 3255 Manufacture Rolex perpetual, mechanical, self-winding movement delivers a precision of -2/+2 seconds per day after casing, approximately 70 hours of power reserve, and bidirectional winding via Perpetual rotor. The oscillator features a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers. The movement carries Superlative Chronometer certification, reflecting both COSC and Rolex's own post-casing standards.
