Rolex Datejust 31 mm

The Rolex Datejust 31 mm ref. 278288RBR-0020 is cased in 18ct yellow gold with a 31mm diameter. The screw-down crown and monobloc middle case are part of Rolex's Oyster construction. A diamond-set bezel surrounds the silver dial, which is itself set with diamonds and carries a Cyclops lens over the date under the sapphire crystal. The self-winding Calibre 2236 drives the watch, offering approximately 55 hours of power reserve and Superlative Chronometer certification. Central seconds and an instantaneous date round out the display functions. The gold President bracelet, with its semi-circular three-piece links, closes with a concealed folding Crownclasp. It stays water resistant to a depth of 100 metres.