While all the 18K gold alloys of Rolex watches shine with special radiance, the Everose gold alloy, used in this particular model, stands out as an exclusive rose gold alloy with unique color, patented by Rolex. The watch features automatic perpetual 2236 caliber entirely manufactured by Rolex and certified by COSC. Along with bi-directional winding via Perpetual rotor, it also features a Rolex-patented Syloxi hairspring, which significantly improves the regularity of the oscillator and the precision of the watch. On the sundust rose dial hours, minutes and seconds are shown by center hands, while instantaneous date is shown in an aperture at the three o'clock position. The 18K Everose gold Oyster case measures 28mm in diameter and features fluted bezel as well as scratch-resistant sapphire crystal with Cyclops lens for the date aperture. It is waterproof to 100m due to the twinlock double waterproofness system of the screw-down crown and monobloc middle case, as well as the hermetic screw-down case back. The case is mounted onto 18K Everose gold President bracelet with semi-circular three-piece links and a concealed folding Crownclasp.