Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278243-0021, cased in steel and gold. The case measures 31 mm across with a domed bezel and a screw-down crown. A sapphire crystal with a Cyclops lens sits over the date, and the dark grey dial is set with diamonds in gold settings. Inside is the calibre 2236, a self-winding movement certified as a chronometer, with 55 hours of power reserve. Central seconds and an instantaneous date round out the functions. The bracelet is steel and gold with a folding Oysterclasp fitted with the Easylink comfort extension link. The screw-down crown helps keep the case waterproof to 100 metres.