Crafted entirely in 18k yellow gold, the 40 mm Oyster case of reference 228238-0003 features a fluted bezel, a solid case back, and a screw-down winding crown equipped with the Twinlock double waterproofness system. Scratch-resistant sapphire crystal protects the dial, with a Cyclops lens positioned over the date window, while the case maintains waterproofness to 100 metres / 330 feet.
The champagne-colour dial is dressed with Roman numeral indices, and the instantaneous day and date readouts appear in twin apertures. Powering the watch is the Calibre 3255, a perpetual mechanical self-winding movement manufactured by Rolex. It delivers a precision rating of -2/+2 seconds per day after casing, a power reserve of approximately 70 hours via bidirectional winding through the Perpetual rotor, and features a paramagnetic blue Parachrom hairspring alongside high-performance Paraflex shock absorbers. The movement carries Superlative Chronometer certification, reflecting both COSC testing and Rolex certification after casing.
This example is presented as a complete set, including the Rolex box and Rolex card. The 18k yellow gold President bracelet with its concealed folding Crownclasp completes the configuration of this reference 228238-0003 Day-Date 40.
