Rolex Datejust 31 mm

The Rolex Datejust 31 mm, reference 278383RBR-0021, is cased in steel and gold with a 31 mm diameter. The dark grey dial is set with diamonds, and the bezel carries diamonds as well. A Cyclops lens sits over the date on the scratch-resistant sapphire crystal. Inside is the self-winding calibre 2236, a chronometer-certified movement with a power reserve of approximately 55 hours. The screw-down crown protects the movement and adds to the case's overall water resistance. Central seconds and a date display round out the functions. The steel and gold bracelet closes with a folding Oysterclasp fitted with an Easylink extension link. This construction keeps the watch reliably water resistant to 100 metres.