Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278271-0020, cased in steel and gold. The case measures 31 mm across and carries a fluted bezel in gold. A sapphire crystal with a Cyclops lens sits over the date, and the aubergine dial is set with diamonds. Inside is the calibre 2236, a self-winding movement certified as a chronometer, with a power reserve of about 55 hours. Central seconds and date are shown, and the crown screws down against the case. The bracelet is steel and gold, closed by a concealed folding Crownclasp. Rolex rates the case to 100 metres.