Reference 128398TBR-0018 is built around a 36 mm 18 kt yellow gold Oyster case featuring a monobloc middle case, screw-down case back, and a screw-down Twinlock winding crown offering waterproofness to 100 metres. The bezel is set with diamonds, and a scratch-resistant sapphire crystal with a Cyclops lens over the date completes the case.
The carnelian dial is itself set with diamonds, while the hour markers in 18 kt gold carry 32 diamonds and the Roman VI and IX numerals in 18 kt gold are set with an additional 24 diamonds. The 18 kt yellow gold President bracelet features semi-circular three-piece links and closes with a concealed folding Crownclasp.
Power comes from the Calibre 3255, a perpetual mechanical self-winding movement produced by Manufacture Rolex. It delivers a precision of -2/+2 seconds per day after casing, an approximately 70-hour power reserve, bidirectional winding via a Perpetual rotor, and a paramagnetic blue Parachrom hairspring with Paraflex shock absorbers. The movement carries Superlative Chronometer certification reflecting both COSC and Rolex certification after casing.
