Rolex Datejust 31 mm

Rolex Datejust 31, reference 278344RBR-0006, measures 31 mm across in steel and gold. The case is fitted with a domed bezel set with diamonds and a screw-down crown, and holds a scratch-resistant sapphire crystal with a Cyclops lens over the date. The dial is white mother-of-pearl set with diamonds, paired with a self-winding movement, calibre 2236, certified as a chronometer. Power reserve runs to approximately 55 hours. Central seconds and date are shown, and the watch carries the Gemstones and/or diamonds designation Rolex applies to its set pieces. A steel bracelet closes with a concealed folding Crownclasp. The case holds a 100 metre water resistance rating.