Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278344RBR-0032, cased in 31 mm steel and gold. The domed bezel is set with diamonds, matching the silver dial, which is also set with diamonds. A sapphire crystal with a Cyclops lens sits over the date, and a screw-down crown protects the movement. Inside is the self-winding calibre 2236, a chronometer with a power reserve of approximately 55 hours and central seconds. The watch carries certification as a Superlative Chronometer, tested by Rolex beyond the standard COSC requirement. It comes on a five-piece Jubilee bracelet in steel, fastened with a concealed folding Crownclasp in steel and gold. The screw-down crown holds the case to its 100 metre water resistance rating.