Rolex Day Date 128239 President 36mm Silver Dial 18K White Gold 2020

More about Day Date 128239 President 36mm Silver Dial 18K White Gold 2020

This is an 18k white gold Rolex Oyster Perpetual Day Date President 128239. It includes an integral 18k white gold presidential link bracelet with a folding deployment clasp and a scratch resistant sapphire crystal. It has a screw down signed Triplock winding crown and a solid screw down case back. The 36mm diameter solid Oyster-shaped monobloc case, curved lugs, bracelet, and fluted bezel, are polished/satin. The dial is sunray silver with applied faceted white gold baton hour markers with a black railway-style minute/second scale. It includes tapered white gold hour and minute hands and there is a gold center sweep second hand. It includes a day arch aperture window at 12 o'clock, and there is a date aperture window at 3 o'clock underneath a cyclops magnification lens. It has a Certified Official Superlative Chronometer (COSC) rating and it's water resistant to 100 meters/330 feet. It has a 70-hour power reserve at full winding and the case, dial, and movement are all signed. This Rolex President Oyster Perpetual Day-Date 128239 has a mechanical automatic self-winding Rolex caliber 3255 (based on the Rolex caliber 3035) movement. It's rhodium plated with fausses cotes embellishment and it's constructed with 31 jewels, a "Chronergy" lever escapement that optimizes energy efficiency, and it's made of nickel phosphorus which is insensitive to magnetic interference. It includes bidirectional self-winding through the perpetual rotor, a Parachrom blue balance spring with an overcoil, and an amagnetic oscillator system. The Chronergy escape wheel is skeletonized to reduce any energy loss due to inertia. It has a free-sprung adjustable mass balance, and the mechanism oscillates at a frequency of 28,800 vph (4 Hz). The Rolex President Oyster Perpetual Day-Date 128239 is an updated version introduced in BaselWorld in 2019.

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