Rolex Datejust 31 mm

The Rolex Datejust 31, reference 278384RBR-0031, measures 31 mm and pairs steel with white gold. The case follows Rolex's Oyster architecture, with a monobloc middle case and a screw-down winding crown. A diamond-set bezel surrounds the dark grey dial, which is itself set with diamonds. A Cyclops lens sits over the date on the sapphire crystal. Inside is the calibre 2236, a self-winding movement certified as a Superlative Chronometer, with a power reserve of approximately 55 hours. The steel Oyster bracelet closes with a folding Oysterclasp fitted with the Easylink comfort extension link. The screw-down crown helps hold the case to its 100 metre water resistance rating.