Reference 128348RBR-0037 presents the Day-Date 36 in a 36 mm Oyster case crafted from 18 kt yellow gold, featuring a bezel set with diamonds and a screw-down winding crown with Twinlock double waterproofness. The case construction follows Rolex's monobloc middle-case architecture with a screw-down case back, offering water resistance to 100 metres / 330 feet, while a scratch-resistant sapphire crystal with a Cyclops lens magnifies the date display.
At the heart of the dial, a turquoise surface set with diamonds is further adorned by hour markers in 18 kt gold set with 32 diamonds, alongside Roman numerals VI and IX rendered in 18 kt gold and set with 24 diamonds. The President bracelet in 18 kt yellow gold closes with a concealed folding Crownclasp, completing a cohesive look in warm gold throughout.
Power comes from Calibre 3255, a perpetual mechanical self-winding movement manufactured by Rolex, delivering a precision of -2/+2 seconds per day after casing and a power reserve of approximately 70 hours. The oscillator features a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers, while the movement carries Superlative Chronometer certification — reflecting both COSC standards and Rolex's own post-casing verification.
