Rolex Explorer II Men's Watch 216570-0001. This 42mm watch features an Oystersteel case and an Oyster bracelet. The white dial features luminous hands and hour markers, with an orange GMT second time zone hand and a date window beneath the Cyclops lens at 3 o'clock. It is powered by the Rolex Caliber 3187 self-winding COSC Superlative Chronometer certified movement with a power reserve of 48 hours.