Rolex Cosmograph Daytona 40 mm

Rolex's Cosmograph Daytona 126509-0002 is a chronograph in 18 ct white gold, measuring 40 mm across and 11.9 mm thick. The fixed bezel carries an engraved tachymetric scale in white gold, sitting above a scratch-resistant sapphire crystal. Beneath it, the bright black and steel dial is set with diamonds, with luminous hands and indices for legibility. The self-winding calibre 4131 drives the watch, a chronometer-certified movement with a chronograph function and small seconds at six o'clock, offering approximately 72 hours of power reserve. A screw-down crown protects the movement from the elements. The case is fitted to an Oyster bracelet in matching white gold, closed by a folding Oysterlock safety clasp with Easylink extension. Rolex rates the case to 100 metres of water resistance.