Longines HydroConquest Automatic Black Dial 39 mm [L3.780.4.56.6]

Engineered for adventure and refined for everyday versatility, the Longines HydroConquest Automatic 39 mm [L3.780.4.56.6] exemplifies the technical prowess and iconic sport styling of the HydroConquest collection. Its sunray black dial features applied Arabic numerals and luminous indices enhanced with Swiss Super-LumiNova for clear legibility in all lighting conditions, while polished hands and a date display at three o’clock add practical utility. 

The robust ceramic unidirectional rotating bezel anchors the professional diver aesthetic, and the screw-in crown and case back help deliver deep water resistance to 30 bar (300 metres) — a hallmark of HydroConquest performance. At its core is a Swiss self-winding mechanical movement (Calibre L888) providing reliable precision and an approximate 72-hour power reserve, ensuring dependable performance whether on land or underwater. 

The durable stainless steel case and bracelet combine strength with refined finishing, and a scratch-resistant sapphire crystal with anti-reflective coating protects the dial with lasting clarity. With its blend of technical capability and everyday wearability, the Longines HydroConquest [L3.780.4.56.6] stands as a versatile choice for the discerning enthusiast. 

Technical Specifications

• Case Diameter: 39 mm

• Case Material: Stainless steel with ceramic unidirectional bezel

• Dial Color: Sunray black with applied Arabic numerals and luminous indices

• Crystal: Scratch-resistant sapphire with anti-reflective coating

• Movement: Self-winding automatic mechanical

• Calibre: L888

• Power Reserve: Approximately 72 hours

• Functions: Hours, minutes, seconds, date

• Bracelet: Stainless steel with double safety folding clasp and diving extension

• Water Resistance: 30 bar / 300 metres

• Warranty: 5-Year Longines International Warranty

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