The Rolex GMT-Master II Batman Ref: 126710BLNR with 40mm Stainless Steel case and Bidirectional rotatable 24-hour graduated bezel Two-colour blue and black Cerachrom insert in Ceramic, engraved numerals and Graduations. The Calibre is 3285, Manufacture Rolex. The Winding Crown is screw-down, Triplock triple waterproofness system. The crystal is scratch-resistant sapphire, cyclops lens over the date. The Power reserve is approvimately 70 hours. THe Water resistance is up to 100 meters / 330 feet. The Bracelet is Jubilee Stainless Steel with Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link. The Watch comes with the Rolex Watch-box.