Rolex Datejust 31 mm

Rolex's Datejust 31 mm, reference 278383RBR-0029, is a chronometer case in steel and gold measuring 31 mm across. The dial is olive green, set with diamonds, and sits under a scratch-resistant sapphire crystal with a Cyclops lens over the date. The bezel is also diamond-set, adding sparkle around the dial. Inside is the self-winding calibre 2236, a perpetual mechanical movement with a power reserve of approximately 55 hours. A screw-down crown protects the case, and the watch shows a central seconds hand alongside the date. The steel and gold bracelet closes with a folding Oysterclasp that includes the Easylink comfort extension link for a quick fit adjustment. The screw-down crown backs up a 100 metre water resistance rating.