
Longines HydroConquest
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The HydroConquest is Longines' dive watch, built to ISO 6425 with a unidirectional bezel, screw-down crown and 300 m water resistance. Its 41 mm steel case holds a black dial under sapphire crystal, a ceramic bezel insert that resists fading, and the L888 automatic movement with a 72-hour power reserve and a silicon balance spring that shrugs off magnetic fields. The bracelet closes with a folding clasp and dive extension. It sits below Omega and Tudor divers on finishing but above entry Swiss divers on movement and specs, and owners rate it as a solid everyday diver with strong value.
In stockShips from Germany · duties may applyReturn policy
Owners and reviewers treat the HydroConquest as a well-built Swiss diver with a movement that punches above its class. Most praise the ceramic bezel, legibility and power reserve; common complaints are the size and the clasp.
The Longines HydroConquest (reference L3.781.4.56.6) is a dive watch built to the ISO 6425 standard. It has a unidirectional rotating bezel, legible luminous markings and a screw-down crown. The bezel insert is ceramic and does not discolor.
Inside is the L888 automatic movement with a 72-hour power reserve. Its balance spring is made of a silicon alloy that is insensitive to magnetic fields. The 41 mm stainless steel case has a sapphire crystal over the black dial and is water resistant to 300 meters. The bracelet has a folding clasp with a diving extension.







