Longines HydroConquest 39mm Automatic Black Dial Steel Bracelet [L3.779.4.56.6]

The Longines HydroConquest 39mm Automatic [L3.779.4.56.6] represents the modern Swiss dive watch in its purest form, combining professional-grade performance with timeless design. Its black lacquered polished dial delivers exceptional clarity and contrast, enhanced by luminous markers and hands for visibility in all conditions. 

Crafted in a 39 mm stainless steel case, the watch features a unidirectional ceramic bezel, screw-in crown, and screw-down case back, 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 engineered for both underwater performance and everyday wear. 

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

The watch is completed with a stainless steel bracelet in a classic H-link construction, fitted with a double security folding clasp and micro-adjustment system, offering a secure and comfortable fit. This configuration represents the most traditional and sport-driven expression of the HydroConquest line.

Technical Specifications

• Brand: Longines
• Collection: HydroConquest
• Reference Number: L3.779.4.56.6
• 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 (H-link bracelet) 
• Clasp: Double security folding clasp with micro-adjustment 

Authorized Dealer | 5-Year Longines International Warranty | Free Shipping Across Canada