42mm 18K yellow gold case, screw-down back, screw-down crown with twinlock double waterproofness system, fluted, bidirectional rotatable rolex ring command bezel, scratch-resistant sapphire crystal with cyclops lens over the date, intense white dial, index hour markers, 9002, manufacture Rolex perpetual self-winding, dual time zones, annual calendar movement with centre hour, minute and seconds hands, 24-hour display on off-centre disc, second time zone, instantaneous annual calendar at 3 o'clock and rapid-setting of the date, month display via 12 apertures around the circumference of the dial, and stop-seconds for precise time setting, approximately 72 hours of power reserve, Oysterflex strap made from flexible metal blades overmoulded with high-performance elastomer, folding Oysterclasp buckle with rolex glidelock extension system. Waterproof to 100 metres / 330 feet.