The Rolex Datejust 278248MDO is a ladies' watch with an elegant yellow gold case and bracelet. It features a sophisticated mother-of-pearl dial accented by diamonds, complemented by gold-tone hands and markers. Powered by the automatic Calibre 2236 movement (based on Rolex 2235) containing 31 jewels operating at 28800 vph with approximately 55-hour power reserve. Includes analog functions: hour, minute, second hands; date display at the 3 o'clock position. Utilizes a scratch-resistant sapphire crystal, comes with a screw-down crown and solid case back, round case shape measuring 31mm in diameter, water resistant up to 100 meters / 330 feet.