Housed in a 40 mm 18 kt yellow gold Oyster case, this Day-Date 40 features a monobloc middle case with a screw-down case back and Twinlock double waterproofness winding crown, offering water resistance to 100 metres. The bezel is set with diamonds, while a scratch-resistant sapphire crystal with Cyclops lens magnifies the date window for effortless legibility. The silver dial presents a Chromalight display delivering long-lasting blue luminescence for low-light readability.
Power comes from the Calibre 3255, a perpetual, mechanical, self-winding movement manufactured by Rolex. Precision is rated at -2/+2 seconds per day after casing, and a Superlative Chronometer certification — encompassing both COSC and Rolex's own post-casing standards — attests to its accuracy. The oscillator features a paramagnetic blue Parachrom hairspring paired with high-performance Paraflex shock absorbers, while bidirectional winding via the Perpetual rotor provides approximately 70 hours of power reserve.
The watch is worn on the President bracelet in 18 kt yellow gold, constructed with semi-circular three-piece links and secured by a concealed folding Crownclasp. Functions include center hour, minute, and seconds hands alongside instantaneous day and date displays in dedicated apertures, with secure rapid-setting and stop-seconds for precise time adjustment. This example is dated 2023 and carries reference 228348rbr-0042.
