Crafted entirely in platinum 950, the 40 mm Oyster case of this Day-Date 40 features a monobloc middle case, screw-down case back, and a screw-down winding crown equipped with the Twinlock double waterproofness system — together rated waterproof to 100 metres. The bezel is set with diamonds, while a scratch-resistant sapphire crystal with a Cyclops lens over the date sits above the slate dial, which carries a Chromalight display offering long-lasting blue luminescence for high legibility.
Power comes from the Calibre 3255, a perpetual mechanical self-winding movement from Manufacture Rolex. Beating with a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers, it delivers a precision rating of -2/+2 seconds per day after casing, a power reserve of approximately 70 hours, and Superlative Chronometer certification — representing both COSC testing and Rolex's own certification post-casing. Functions include centre hour, minute, and seconds hands alongside instantaneous day and date displays in apertures, secure rapid-setting, and stop-seconds for exact time setting.
The platinum President bracelet, distinguished by its semi-circular three-piece links, fastens with a concealed folding Crownclasp, completing a reference that sits at the pinnacle of the Day-Date lineage. This example is dated 2023, reference 228396TBR-0031.
