Rolex brand Model (Watch) GMT-Master II Reference number 16710 Automatic winding Case Material Steel Strap material Steel Early 1990s Condition Very good (second-hand, no or barely visible signs of wear and tear) Kit original Rolex documents, no box Case Material Steel Diameter 40 mm Waterproof 10 ATM Bezel material Steel Glass Sapphire crystal Black dial Numerals on dial Without numerals Strap Strap material Steel Strap colour Steel Folding clasp Clasp material Steel Functions Date, GMT