Tudor Black Bay 58 GMT

Tudor's Black Bay 58 GMT, reference M7939G1A0NRU-0002, is a 39mm steel case watch built as a GMT watch. The case measures 12.8mm thick with a 20mm lug width, and the black dial sits under a domed sapphire crystal. Inside is the manufacture calibre MT5450-U, a self-winding movement with COSC and METAS chronometer certification and 65 hours of power reserve. A bidirectional rotating bezel in stainless steel carries a black and burgundy aluminium insert, and the integrated GMT function runs off a central hand. Hour markers and hands are luminous. The watch comes on a rubber strap fitted with a steel folding clasp. The screw-down crown helps hold the case to its 200 metre water resistance rating.