Rolex Datejust 31 mm

This Rolex Datejust 31 mm, reference 278289RBR-0011, comes in 18 ct white gold with a diamond-set bezel. The case measures 31 mm across and carries a bright black dial under a scratch-resistant sapphire crystal with a Cyclops lens over the date. Inside is calibre 2236, a self-winding movement certified as a chronometer, with a power reserve of approximately 55 hours. The screw-down crown protects the movement and adds to the watch's overall solidity. Beyond the date function, the dial runs a central seconds hand, and the watch is set with diamonds. The bracelet is the President style, also in white gold, fitted with a concealed folding Crownclasp. Rolex rates the case to 100 metres of water resistance.