Longines HydroConquest 39mm Automatic Black Dial Milanese Mesh Steel Bracelet [L3.779.4.90.6]

The Longines HydroConquest 39mm Automatic [L3.779.4.90.6] represents a refined evolution of the modern Swiss dive watch, combining professional-grade capability with elevated design. Its black lacquered polished dial delivers exceptional clarity and contrast, enhanced by luminous markers and hands for visibility in all conditions.

Engineered for performance, the watch features a 39 mm stainless steel case, unidirectional ceramic bezel, and screw-in crown, ensuring durability and precision. With 300 m (30 bar) water resistance and a scratch-resistant sapphire crystal with anti-reflective coating on both sides, it is built for both underwater exploration and daily wear.

At its core is the Longines Calibre L888.5 automatic movement, offering a robust 72-hour power reserve and enhanced accuracy through a silicon balance spring, improving resistance to magnetic interference and long-term stability.

This reference is defined by its Milanese stainless steel bracelet, also known as a mesh bracelet, which introduces a fluid, refined aesthetic distinct from traditional link bracelets. The finely woven construction provides superior comfort while elevating the watch into a versatile sport-luxury category—equally suited for business attire or relaxed weekend wear.

Technical Specifications

• Brand: Longines
• Collection: HydroConquest
• Reference Number: L3.779.4.90.6
• Case Diameter: 39 mm
• Case Material: Stainless steel with ceramic bezel
• Dial Color: Black lacquered polished
• Movement: Automatic (Longines Calibre L888.5)
• Power Reserve: ~72 hours
• Balance Spring: Silicon (anti-magnetic)
• Functions: Hours, minutes, seconds, date
• Bezel: Unidirectional rotating ceramic bezel
• Crystal: Scratch-resistant sapphire with anti-reflective coating on both sides
• Water Resistance: 300 m / 30 bar
• Crown: Screw-in crown
• Caseback: Screw-down
• Bracelet: Stainless steel Milanese (mesh) bracelet
• Clasp: Double security folding clasp with micro-adjustment

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