HydroConquest Automatic 39mm

The Longines HydroConquest collection is a bold and highly functional line of diving watches that combines sporty design with robust technical performance, inspired by the world of water sports and adventure. Introduced in 2007, the collection is defined by its durable construction and professional-grade features, including water resistance up to 300 meters, a unidirectional rotating bezel, and a screw-down crown and case back for enhanced reliability in demanding conditions. Available in a range of sizes, materials, and color options—often featuring ceramic bezels and luminous markers for optimal legibility—HydroConquest models are powered by precise quartz or automatic movements equipped with modern innovations such as silicon balance springs for improved accuracy and resistance to magnetic fields. Blending technical excellence with refined aesthetics, the collection offers a versatile timepiece that performs equally well underwater and in everyday wear, reflecting Longines’ commitment to both performance and elegance.

Specifications

• MOVEMENT: L888.5 Swiss Automatic
  
• POWER RESERVE: 72 Hours
• CASE CRYSTAL: Anti-Reflective Sapphire Crystal
  
• CASE MATERIALS: Stainless Steel
  
• CASE DIAMETER: 39mm
  
• LUG WIDTH: 20mm
• WATER RESISTANCE: 30 Bar (300m)
  
• FEATURES: Super-Luminova® Hands & Indexes
• FEATURES: Ceramic bezel
• FEATURES: Monocrystalline Silicon balance spring

FAQ

• What is an automatic watch?
  • Watch collectors are drawn to automatic timepieces for their embodiment of true horological luxury and craftsmanship. Powered by the natural motion of the wearer, these finely engineered movements eliminate the need for batteries while showcasing a seamless, sweeping seconds hand and intricate mechanical artistry beneath the surface. Beyond function, an automatic watch represents heritage, prestige, and enduring value—often becoming a refined statement piece and a legacy to be passed down through generations.
• What makes the Longines calibre L888.5 special?
  • The Longines Calibre L888.5 exemplifies modern Swiss refinement, blending traditional horological craftsmanship with advanced materials. Beating at a measured 25,200 vibrations per hour, it offers an extended power reserve of approximately 72 hours, ensuring enduring precision and reliability. At its core lies a cutting-edge silicon balance spring, delivering exceptional resistance to magnetism and long-term stability. Elegant, robust, and quietly sophisticated, the L888.5 embodies Longines’ commitment to timeless performance with contemporary innovation.
• What is Super-Luminova®?
  • Super-LumiNova® is widely used by Rado to enhance legibility in low-light conditions, applied to hands, hour markers, and sometimes bezel details across many of its models. This advanced, non-radioactive material absorbs light and emits a bright, long-lasting glow in the dark, ensuring the time remains easy to read without any external power source. Known for its durability and consistent performance, Super-LumiNova® complements Rado’s focus on modern materials and everyday practicality, providing both safety and reliability in a refined, minimalist design.