Housed in a 36 mm platinum Oyster case, the Day-Date 36 (ref. 128236-0021) features a monobloc middle case construction with a screw-down case back and Twinlock screw-down winding crown, delivering water resistance to 100 metres. A fluted bezel frames the scratch-resistant sapphire crystal, which carries a Cyclops lens positioned over the date window.
The white mother of pearl dial is set with diamonds alongside 10 baguette-cut diamond hour markers, bringing a pronounced gemstone presence to the face. The platinum President bracelet — featuring semi-circular three-piece links and a concealed folding Crownclasp — completes the all-platinum presentation.
Power comes from the Rolex Calibre 3255, a perpetual mechanical self-winding movement with a precision rating of -2/+2 seconds per day after casing, a paramagnetic blue Parachrom hairspring, Paraflex shock absorbers, bidirectional winding via a Perpetual rotor, and a power reserve of approximately 70 hours. The movement is COSC certified and delivers instantaneous day and date display with secure rapid-setting and stop-seconds functionality.
