Rolex Datejust 31 mm

The Rolex Datejust 31 mm, reference 278383RBR-0004, has a steel and gold case measuring 31 mm across. The bezel is diamond-set, and the silver dial is also set with diamonds. A sapphire crystal covers the dial, with a Cyclops lens magnifying the date. Inside is the self-winding calibre 2236, a Rolex manufacture movement with a power reserve of approximately 55 hours; the watch is certified as a chronometer. The screw-down crown adds to the watch's practicality, and central seconds and date functions round out the display. It is fitted to a steel and gold bracelet with a concealed folding Crownclasp. Water resistance reaches 100 metres, courtesy of the screw-down crown and case construction.