Rolex Lady-Datejust 28 mm

The Rolex Lady-Datejust 28 mm, reference 279173-0023, comes in a 28 mm case of steel and gold. The bezel is fluted, and the screw-down crown works with the Twinlock system to secure the case. A sapphire crystal with a Cyclops lens sits over the date, above a white dial. Inside is the calibre 2236, a self-winding mechanical movement with a power reserve of approximately 55 hours, certified as a Superlative Chronometer. Central seconds and a date display round out the functions. The bracelet is steel and gold with a concealed folding Crownclasp. Rolex rates the case to 100 metres of water resistance.