A growing family

This year, the HYDROCONQUEST GMT line has been enhanced with new models with 43 mm diameter cases. Water-resistant up to 30 bar (300 metres), robust, and with a unidirectional rotating ceramic bezel, screw-in crown and screw-down case back, this collection is inspired by the world of water sports. Like the 41 mm models launched in 2023, the new HYDROCONQUEST GMTs feature an exclusive Longines movement with multiple time zones and offer a choice of colours and materials.

Combining performance and style, HydroConquest watches are designed for those who love pushing back boundaries and exploring new horizons. First launched in 2007, the collection was expanded last year with a series of 41 mm diameter GMT models with a completely new design.

The HydroConquest family has now been expanded with new 43 mm diameter models.  Alternating polished and satin-brushed faces, this new-generation stainless steel

case with screw-down back houses the exclusive Longines GMT calibre L844.5, equipped with a silicon balance‑spring and innovative components made of non-magnetic materials. This movement’s resistance to magnetic fields is more than ten times greater than the ISO 764 reference standard. It boasts extreme precision and a power reserve of up to 72 hours.

The new HydroConquest GMTs offer a choice of a black, blue or green dial, and feature a sapphire crystal with a multi-layer anti-reflective coating. The indexes are coated with Super-LumiNova®, for easy reading in all conditions. They are round at 6 and 9 o’clock, and triangular at 12 o’clock. The date is displayed clearly through the window at 3 o’clock. The arrow-shaped GMT indicator matches the colour of the dial decals. On the bezel, the 24-hour scale is displayed in two tones to mark the transition between night and day.

HydroConquest GMT watches are water-resistant up to 30 bar (300 metres) and feature a screw-in crown. Another asset for water sports enthusiasts is the watch’s unidirectional notched ceramic bezel, fitted with a luminescent capsule.

The new models are paired with stainless steel bracelets with H-shaped links, or blue or black rubber straps. For added comfort, all bracelets feature a double-safety folding clasp with micro-adjustment.

The GMT Function

The GMT complication watch is intrinsically linked to the brand’s history and pioneering spirit. In 1911, Longines filed a patent for the first pocket watch displaying two time zones. And as early as 1908, a model designed for the Ottoman Empire (Turkey) could convert Turkish time into Western time. In 1925, the brand produced for the first time a series of wristwatches displaying a second time zone. This history is still being written today, with several flagship models such as the Longines Spirit Zulu Time, the Longines Master Collection GMT and the HydroConquest GMT.

About our movements

Backed by centuries of watchmaking expertise, Longines has pioneered many technical advances and still displays an unfailing will to innovate. Its constant pursuit of excellence has led Longines to equip all its automatic timepieces with cutting-edge movements whose features include a silicon balance-spring. Silicon is not only lightweight and corrosion-resistant, but also unaffected by normal temperature fluctuations and magnetic fields. Its unique properties boost the watch’s precision and longevity and allow Longines to guarantee these models for 5 years.

About Longines

Longines has been based in Saint-Imier in Switzerland since 1832. Its watchmaking expertise reflects a strong devotion to tradition, elegance and performance. With many years of experience as a timekeeper for world championships in sport and as a partner of international sporting federations, Longines has forged solid and lasting links with the world of sport over the years. Known for the elegance of its timepieces, Longines is a member of the Swatch Group Ltd, the world’s leading manufacturer of horological products. The brand with the winged hourglass as its emblem has outlets in over 150 countries.