Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278383RBR-0020, measures 31 mm across in a case of steel and gold. The bezel is diamond-set, and the case pairs with a screw-down crown for added security. A sapphire crystal covers the dial, with the usual Cyclops lens magnifying the date. Inside is the calibre 2236, a self-winding movement with a power reserve of approximately 55 hours, and the watch carries chronometer certification. The silver dial is set with diamonds and shows the date alongside a central seconds hand. A steel and gold bracelet closes with a concealed folding clasp. The screw-down crown backs up the case's 100 metre water resistance rating.