Rolex 278278 mdo 31mm 18K yellow gold case, screw-down crown with twinlock double waterproofness system, fluted bezel, scratch-resistant sapphire crystal with cyclops lens over the date, mother of pearl dial, 10 diamond hour markers, Rolex calibre 2236 automatic movement with center hour, minute and seconds hands, instantaneous date with rapid setting, and stop-seconds for precise time setting, approximately 55 hours of power reserve, 18K yellow gold Oyster bracelet with flat three-piece links, concealed folding Crownclasp buckle.