Diving watches “par excellence”, the models in the HydroConquest series are a homage to the men who have dedicated themselves to conquering the oceans and to enthusiasts of the open seas. They meet the strict requirements demanded by this discipline: they are water-resistant to 30 bar (300 metres), are fitted with a unidirectional turning bezel, screw-down case and screw-in crown, lateral protection for the crown and double security folding clasp with integrated diving extension-piece. These rigorous guarantees of uncompromising safety fit in perfectly with the harmony of this silent world. Performance and elegance, a unique Longines combination.