Rolex Datejust 31 mm

Rolex's Datejust 31, reference 278271-0030, is a chronometer measuring 31 mm in steel and gold. The case pairs a fluted bezel in gold with a screw-down crown, and the date sits under a Cyclops lens on the sapphire crystal. Inside is the calibre 2236, a self-winding movement with 55 hours of power reserve. The slate dial is set with diamonds, and the movement carries Rolex's Superlative Chronometer certification. Central seconds and an instantaneous date round out the display functions. The watch is fitted with a Jubilee bracelet in steel and gold, closed by a concealed folding Crownclasp. Rolex rates the case to 100 metres.