Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278344RBR-0002, measures 31 mm across in steel and gold. The case holds a bright black dial under a scratch-resistant sapphire crystal with a Cyclops lens over the date. A domed bezel is set with diamonds, and the watch is further set with diamonds. Inside is the self-winding calibre 2236, a chronometer-certified movement with a central seconds display and a power reserve of approximately 55 hours. The date sits alongside a screw-down crown, a detail that also reinforces the case's water resistance. The watch is fitted on a Jubilee bracelet in steel, closed by a concealed folding Crownclasp in steel and gold. That crown and clasp combination keep the case rated to 100 metres.