Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278273-0020, has a 31 mm case in steel and gold. The fluted bezel is gold, a Rolex signature detail, and the dial sits under a scratch-resistant sapphire crystal with a Cyclops lens over the date. The silver dial is set with diamonds, an unusual touch for a watch of this size. Inside is the self-winding calibre 2236, a chronometer-certified movement with 55 hours of power reserve. A screw-down crown protects the movement, and the display includes a central seconds hand and date function. The bracelet is steel and gold, fitted with a concealed folding Crownclasp. The screw-down crown also helps hold the case to its 100 metre water resistance rating.