Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278343RBR-0020, measures 31 mm across in steel and gold. The case is fitted with a domed, diamond-set bezel and a screw-down crown, and the date sits under a Cyclops lens on a sapphire crystal. Inside is the self-winding calibre 2236, a Rolex manufacture movement certified as a chronometer with a power reserve of around 55 hours. The silver dial is set with diamonds and shows a central seconds display alongside the date. This is a women's dress watch built on the Datejust's Oyster architecture, with the diamonds set in 18 ct gold. The bracelet is steel and gold, closed by a concealed folding Crownclasp. That same screw-down crown, with its double waterproofness system, keeps the case sealed to 100 metres.