Rolex Explorer II 40mm Stainless Steel Watch (Ref. 16570) - This handsome timepiece by Rolex is the 40mm stainless steel Explorer II. Each Rolex model caters to a different profession or lifestyle, and this fascinating model is no different as it was developed for use while in dark environments such as caves or the Arctic. The watch features a black dial with highly visible luminous markers and hands, red GMT hand, a fixed 24-hour bezel that can be read against the red arrow hand to track day and night hours or sync with a second time zone, a reliable 3185 self-winding movement, and a stainless steel Oyster bracelet with Oysterlock clasp. Reference #: 16570.