Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278344RBR-0014, cases the watch in steel and gold at 31 mm across. The case holds a domed bezel set with diamonds and carries a silver dial under a scratch-resistant sapphire crystal with a Cyclops lens over the date. Inside is the self-winding calibre 2236, a Rolex manufacture movement certified as a chronometer, offering around 55 hours of power reserve. The dial shows a central seconds hand and a date display, and the hands and indices are luminous. Diamonds also appear elsewhere on the case, set into the metal by hand. A steel bracelet with a concealed folding Crownclasp closes the watch on the wrist. The screw-down crown backs up a water resistance rating of 100 metres.