Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278343RBR-0030, cased in steel and gold with a 31 mm diameter. The domed bezel is set with diamonds, matching the olive green dial, which is also set with diamonds. A Cyclops lens sits over the date on the sapphire crystal. Inside is the self-winding calibre 2236, a chronometer movement with a 55 hour power reserve, fitted with a Syloxi hairspring in silicon. The watch is a chronometer and shows the date alongside central seconds. It comes on a steel and gold bracelet with a concealed folding Crownclasp. The screw-down crown backs up a case rated waterproof to 100 metres.