Rolex Datejust 31 mm

This Rolex Datejust 31 mm, reference 278278-0020, is cased in 18 ct yellow gold. The case measures 31 mm across and carries a fluted bezel in the same gold. A scratch-resistant sapphire crystal covers the white dial, with a Cyclops lens set over the date. The movement is the calibre 2236, a self-winding mechanical Manufacture Rolex movement with a power reserve of around 55 hours, and the watch is certified as a Superlative Chronometer. Functions include a central seconds hand and an instantaneous date, and the winding crown is screw-down for added security. The dial sits on a President bracelet, also in 18 ct yellow gold, closed by a concealed folding Crownclasp. Rolex rates the case to a depth of 100 metres.