Rolex Explorer II watch, round stainless steel adjustable stainless steel Oysterlock bracelet, white dial with luminous hour markers, fixed 24hr stainless steel bezel and independently adjustable 12-hour hand allows for simultaneous operation of a second time zone, date calendar at 3 o'clock, 31 jewel Caliber 3185 self-winding Oyster Perpetual chronometer movement, scratch-resistant sapphire crystal, water-resistant to 100 meters.