Brand New Authentic Longines HydroConquest GMT Black Dial Steel Men's Watch, model L3.790.4.56.6 (L37904566). Features a brushed stainless steel case and band, deployment clasp with push button mechanism, unidirectional rotating bezel, black dial with silver tone hands and index hour markers including outer minute markers, automatic movement powered by Longines Caliber L844 engine offering 72 hours of power reserve, date function, scratch resistant sapphire crystal, round case size measuring 41mm diameter and 12.9mm thick, solid case back, water resistance up to 300 meters (approximately 990 feet), screw-in crown.