Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278273-0016, is a women's model in steel and gold measuring 31 mm across. The fluted bezel is gold, a Rolex signature applied to the Oystersteel and yellow gold case. Inside is the calibre 2236, a self-winding movement with a 55-hour power reserve, certified as a chronometer. A sapphire crystal with a Cyclops lens sits over the date. The olive green dial is set with diamonds and pairs with a matching steel and gold bracelet closed by a concealed folding Crownclasp. Central seconds and an instantaneous date round out the functions. The screw-down crown helps keep the case waterproof to 100 metres.