Rolex Datejust 31 mm

The Rolex Datejust 31 mm, reference 278274-0007, is a women's model in steel and gold measuring 31 mm across. The case has a fluted bezel and a screw-down crown, and the dark grey dial is set with diamonds. A sapphire crystal with a Cyclops lens sits over the date. Inside is the self-winding calibre 2236, a Rolex manufacture movement certified as a chronometer with a power reserve of about 55 hours. The watch shows a central seconds hand alongside the date. It is fitted to a steel bracelet with a folding Oysterclasp and Easylink comfort extension link. The screw-down crown helps keep the case waterproof to 100 metres.