Rolex Datejust 31 mm

The Rolex Datejust 31 mm, reference 278344RBR-0007, comes in steel and gold with a 31 mm case. A domed, diamond-set bezel surrounds the dark grey dial, which is itself set with diamonds. The dial sits under a scratch-resistant sapphire crystal with a Cyclops lens over the date. Inside is the calibre 2236, a self-winding chronometer movement with a power reserve of approximately 55 hours. The watch shows a central seconds display and a date function, with the screw-down crown adding to its practical security. It is fitted on a steel Oyster bracelet with a folding Oysterclasp and Easylink comfort extension link. The screw-down crown and case construction hold the water resistance to 100 metres.