L3.688.4.53.6Ref

The HydroConquest series, considered diving watches par excellence, celebrates ocean conquerors and fans of the open seas. Every model satisfies rigorous standards: water-resistant to 30 bar (300 m), unidirectional rotating bezel, screw-down case and screw-in crown, lateral crown protection, and double security folding clasp with integrated diving extension. Such uncompromising safety fits perfectly with the underwater world's serenity, delivering performance and elegance—a hallmark of Longines.