Longines HydroConquest automatic green dial steel bracelet 39 mm

The story behind it

Since its launch in 2007, the HydroConquest collection has embodied a distinctive vision of the diving watch according to Longines: that of an instrument capable of meeting the highest technical standards while maintaining a natural elegance, true to the Maison’s DNA. A philosophy inherited from the Conquest collection, the first line registered by Longines in 1954, originally designed as a versatile and refined everyday watch.

With the HydroConquest, this ambition takes on a new dimension. Designed to perform both in aquatic environments and in urban settings, it has established itself over nearly two decades as a benchmark among modern dive watches, combining robustness, legibility and style without compromise.

In 2026, Longines takes a new step by unveiling a fully reinterpreted generation of its aquatic icon. More than an evolution, this new HydroConquest reflects a desire to refine every detail: revised proportions, cleaner design, optimized ergonomics. Inspired by the codes introduced with the GMT models, it adopts a more contemporary aesthetic, where legibility and balanced lines take precedence over traditional design cues.

In this 39 mm format, this new version achieves a particularly well-balanced presence. Both discreet and present, it naturally fits the wrist and accompanies every moment of the day with ease. True to its DNA, it remains a genuine diving watch, water-resistant to 300 meters, while asserting a rare versatility, capable of adapting to different uses and styles without ever feeling out of place.

A sport-chic watch for everyday life

Designed to accompany every moment of the day, this new HydroConquest reflects a modern approach to sports watchmaking, where performance and elegance coexist naturally. Inspired by the aquatic world, it retains the essential attributes of a robust and reliable timepiece, while moving beyond the strict codes of professional dive watches to better suit contemporary lifestyles.

Water-resistant to 300 meters, equipped with a unidirectional rotating bezel and offering optimal legibility in all conditions, it meets the demands of an active environment. Yet it is in its ability to go beyond this framework that it truly stands out. More than a technical instrument, this HydroConquest is designed as an everyday watch, capable of integrating seamlessly into a wide variety of situations.

On the wrist, its 39 mm case and refined ergonomics provide immediate comfort, while its clean design makes it easy to pair with any outfit. It accompanies a working day just as naturally as a weekend outdoors, a trip or a more formal occasion. This controlled versatility is now one of the strongest signatures of the collection.

Through this new generation, Longines reaffirms its ambition to offer a contemporary sports watch, designed not for a single use, but to adapt to the rhythms and environments of modern life.

Design and finishing

Completely redesigned for this new generation, the HydroConquest adopts a more contemporary aesthetic, inspired by the codes introduced with the GMT models. The 39 mm case, with smoother and slightly refined lines, offers a balanced silhouette and optimized ergonomics, ensuring natural comfort on the wrist while maintaining a controlled presence.

The lacquered green dial stands out for the intensity of its color and the richness of its nuances, shifting between depth and subtlety depending on the light. Both modern and elegant, this shade highlights the new dial architecture, characterized by applied indexes with varied geometric shapes replacing traditional numerals. This evolution enhances legibility while introducing a cleaner and more contemporary aesthetic, reinforced by the Super-LumiNova® treatment on the indexes and hands.

The green ceramic unidirectional rotating bezel extends this strong visual identity by creating a harmonious continuity with the dial. Scratch-resistant, it also offers precise handling, with an improved tactile feel resulting from the latest technical developments of the collection.

Movement and performance

At the heart of this HydroConquest beats the Longines L888.5 automatic calibre, an exclusive movement renowned for its reliability and performance suited to everyday demands. Equipped with a silicon balance spring, it offers increased resistance to magnetic fields, a key advantage in a modern environment where sources of interference are numerous.

This movement also stands out for its comfortable power reserve of up to 72 hours, allowing the watch to maintain autonomy over several days without being worn. Stable and precise, it accompanies every moment with consistency, whether in daily use or during more demanding activities.

Designed to last, the L888.5 calibre perfectly illustrates Longines’ approach: offering accessible, reliable and technically accomplished watchmaking, without compromising performance or user experience.

Steel bracelet

This HydroConquest is fitted with a stainless steel bracelet featuring H-shaped links, directly inspired by the GMT models of the collection. This design, both structured and contemporary, reinforces the sporty character of the watch while maintaining a discreet elegance perfectly suited to everyday wear.

Carefully integrated into the case, this bracelet offers harmonious visual continuity and a natural fit on the wrist. Its construction ensures both robustness and comfort, allowing extended wear without constraint, whatever the conditions.

It is equipped with a double-security folding clasp, incorporating a highly practical micro-adjustment system. This allows the bracelet size to be easily adapted for optimal comfort throughout the day, particularly in response to changes in temperature or activity.

Reliable, comfortable and highly versatile, this steel bracelet highlights the identity of this HydroConquest: a contemporary sports watch designed to accompany every moment with ease and elegance.

A watch designed for every moment

With this new generation of HydroConquest, Longines presents a watch capable of adapting to all the rhythms of modern life. Designed to accompany both active days and more formal moments, it stands out for its rare versatility in the world of contemporary sports watches.

On the wrist, it naturally finds its place in every situation: at the office, while traveling, during outdoor activities or in more formal settings. Its balance of presence, comfort and legibility makes it a reliable everyday companion, never appearing excessive or out of place.

This ability to transition effortlessly between different environments perfectly reflects Longines’ philosophy: creating watches that are both elegant and high-performing, designed to last and to accompany every moment with precision.