A Serial, Gold Thru Buckle Rolex Submariner Date 16613LB men's watch. Features a polished with brushed 904L Oystersteel stainless steel case and Oyster bracelet. Blue unidirectional rotating bezel insert with engraved 60 minute scale and graduations. Blue dial with dot hour markers. Date displayed under cyclops lens in window at 3 o'clock with instantaneous date setting. Powered by the Rolex Caliber 3135 self-winding automatic COSC Superlative Chronometer certified movement which boasts a 48 hour power reserve, beats at 28,800 vph and contains 31 jewels. A scratch resistant sapphire crystal protects the dial. The case is round and 40mm in diameter. Inlet size: 13mm. Solid case back. Screw down crown and case back. Stainless steel deployment buckle. Waterproof to 300 meters / 1000 feet. Functions: hours, minutes, seconds, date. Diving watch style. Swiss made.