Rolex Day-Date 40 mm

Rolex Day-Date 40, reference 228348RBR-0042, measures 40 mm across in yellow gold. The case stands 12 mm thick and holds a sunray silver dial under a scratch-resistant sapphire crystal with a Cyclops lens over the date. A diamond-set bezel surrounds the dial, and the screw-down crown gives the winding stem its double waterproofness system. Inside is the calibre 3255, a self-winding Perpetual movement with roughly 70 hours of power reserve and Superlative Chronometer certification. Hands and indices carry luminescence for legibility in the dark, and the day and date show in apertures with instantaneous, secure rapid-setting. This is a men's Day-Date built on the President bracelet in matching yellow gold, closed by a concealed folding Crownclasp. Rolex rates the case to a depth of 100 metres.