Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278240-0009, is a women's model in a 31 mm steel case with a domed bezel. The dial is dark grey, viewed through a scratch-resistant sapphire crystal with a Cyclops lens over the date. Inside is the self-winding calibre 2236, a Rolex manufacture movement with a power reserve of approximately 55 hours, certified as a chronometer. The dial has luminous hands and indices, with a central seconds display and a date function. A screw-down crown adds to the case's security. The steel Oyster bracelet closes with a folding Oysterclasp fitted with an Easylink comfort extension link. Waterproofing is rated to 100 metres.