Rolex Datejust 31 mm

The Rolex Datejust 31 mm, reference 278240-0003, is a women's model in steel with a case diameter of 31 mm. The case has a domed bezel and a monobloc middle construction with a screw-down crown. A scratch-resistant sapphire crystal covers the white dial, with a Cyclops lens set over the date. Inside is the self-winding calibre 2236, a Rolex manufacture movement certified as a chronometer, offering around 55 hours of power reserve. The dial shows a central seconds hand alongside the date function. The watch is fitted on a steel Oyster bracelet with a folding Oysterclasp and Easylink comfort extension link. Rolex rates the case to 100 metres of water resistance.