Longines Hydroconquest 39mm Green L3.779.4.06.6

The **Longines HydroConquest 39mm Green L3.779.4.06.6** is a modern luxury dive watch that perfectly balances contemporary styling with the dependable performance that has defined the HydroConquest collection for nearly two decades. Redesigned for 2026, this 39mm stainless steel reference features a beautifully polished green lacquer dial paired with a matching green ceramic unidirectional bezel, creating a refined yet sporty aesthetic that stands out without being overbearing. Its compact case size, slim 11.7mm profile, and 48.1mm lug-to-lug measurement make it exceptionally comfortable on a wide range of wrists, while applied Super-LumiNova-filled hour markers, a screw-down crown, and 300 meters of water resistance ensure it remains a true professional dive watch. Finished on a newly designed stainless steel bracelet with an on-the-fly micro-adjustment clasp, the HydroConquest is equally suited for underwater adventures and everyday wear.

Powering the L3.779.4.06.6 is the exclusive **Longines Caliber L888.5**, an automatic movement featuring a silicon balance spring, enhanced magnetic resistance, and an impressive 72-hour power reserve. Visible only through its solid screw-down caseback, the movement is engineered for outstanding precision, durability, and long-term reliability while exceeding modern expectations for a Swiss sports watch in its class. Combined with a scratch-resistant sapphire crystal featuring anti-reflective coating on both sides, a ceramic bezel insert, and Longines' renowned finishing quality, the HydroConquest delivers exceptional value in the luxury dive watch segment. For collectors seeking a versatile everyday sports watch with refined proportions, contemporary technology, and timeless Swiss craftsmanship, the HydroConquest 39mm Green stands as one of the strongest offerings in its category.

Reference: L3.779.4.06.6

Dated: 2026

Bracelet: Stainless Steel Bracelet

Case: 39mm x 11.7mm Thickness - Stainless Steel

Lug Width: 20mm

Movement: L888.5 - Automatic

Functions: Hours, Minutes, Seconds, Date

Box and Papers: Box and Papers

Crystal: Sapphire

Bracelet size: 7.5”

Case has no wear. Bracelet has only light wear on clasp. Dial, hands, and crystal have no wear. Watch is running within spec.

Longines, founded in 1832 by Auguste Agassiz in Saint-Imier, Switzerland, started as Raiguel Jeune & Cie. In 1846, Agassiz's nephew, Ernest Francillon, joined the company, bringing innovations like crown-wound pocket watches that positioned the company at the forefront of watchmaking technology. In 1867, Francillon established the company's first factory in Saint-Imier's "Les Longines" and introduced the 20A movement, earning accolades at the Universal Exhibition in Paris. Francillon's strategic move to industrialize production and Jacques David's technical direction were pivotal in shaping Longines' future as a leader in Swiss watchmaking.

The late 19th and early 20th centuries saw Longines pioneering in sports timing with the development of its first chronograph movement in 1878 and becoming a primary supplier for New York sporting officials by 1886. The company's trademark winged hourglass logo, registered in 1889, remains the oldest unchanged active trademark with the WIPO. In the 20th century, Longines adapted to the rise of aviation, creating iconic watches like the Weems Second-Setting Watch and the Hour Angle watch. The mid-20th century brought advancements like the Chronocinegines and the company's first quartz movement. Today, under the Swatch Group, Longines continues to blend its historical heritage with modern design, producing elegant and precise timepieces while maintaining its long-standing connection to the world of sports.