The Longines HydroConquest GMT 41mm (L3.790.4.56.9) is a sophisticated fusion of professional dive watch capability and essential travel functionality, representing a true benchmark in modern sports watch design. This robust timepiece features a 41mm stainless steel case with a thickness of 12.90mm, presenting a balanced and commanding presence on the wrist, complemented by a unidirectional rotating bezel with a scratch-resistant black ceramic insert that provides a sleek, durable contrast to the black dial. The sunray black dial offers a rich, dynamic canvas for applied indexes and silvered polished hands, all coated with Swiss Super-LumiNova® for exceptional legibility in any lighting condition. At the heart of this horological instrument beats the exclusive Longines automatic caliber L844, a self-winding mechanical movement that operates at 25,200 vibrations per hour and delivers an impressive 72-hour power reserve, while its silicon balance-spring and innovative non-magnetic components offer more than 10 times the resistance to magnetic fields than the ISO 764 standard. The watch is engineered for robust performance with 300-meter water resistance, a screw-down crown, and a scratch-resistant sapphire crystal with anti-reflective coating on both sides. Secured by a comfortable black rubber strap with a double-security folding clasp and micro-adjustment system, this versatile timepiece is the ideal companion for the discerning individual who navigates both the depths and multiple time zones with effortless style and precision. Key specifications: 41mm stainless steel case; black ceramic bezel; sunray black dial with Super-LumiNova; Longines Caliber L844 automatic movement; 72-hour power reserve; GMT function; 300m water resistance; black rubber strap.