Powered by an exclusive Longines GMT movement that enables the time to be displayed for two time zones. It is equipped with a silicon balance-spring and innovative non-magnetic components that make this calibre more than 10 times more resistant to magnetic fields than the ISO 764 standard. The HydroConquest GMT is also distinguished by its 41 mm-diameter stainless steel case with screw-down back and crown. This model features a new unidirectional notched bezel in black ceramic with luminescent capsule. This dial is green. This version comes with a stainless-steel bracelet, or a green NATO strap made from recycled material.