Longines HydroConquest HydroConquest 39 Automatic Stainless Steel / Black / Bracelet

Reference L3.780.4.56.6

Longines HydroConquest 39 Automatic Stainless Steel / Black / Bracelet

About this watch

The Longines HydroConquest 39 Automatic is a masterful blend of style, precision, and durability. This luxury watch boasts a striking black dial with a matte finish, adding a sophisticated touch to its sporty design. The rotating bezel with a bold 0-60 dive scale gives it an edgy feel, perfect for both formal and casual settings. Built from stainless steel and ceramic, this watch is designed to withstand the rigors of underwater adventures and daily wear alike. Its robust construction ensures that your HydroConquest stays pristine even after years of use. With a diameter of 39.00 mm and a height of 12.20 mm, it's a comfortable fit for most wrist sizes. The Longines caliber L888.5 automatic movement provides accuracy and reliability, boasting chronometer certification and a power reserve of 64 hours. This means you'll always be on time, making every second count. With features like date display, water resistance up to 300 meters, and a rotating bezel for tracking elapsed time underwater, this watch is designed for functionality and safety. Whether you're diving deep or just enjoying a casual day, the HydroConquest will keep you looking sharp and feeling confident.

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Key Features

Automatic movement with chronometer certification
Water resistance up to 300 meters
Rotating bezel for tracking elapsed time underwater
Date display for easy timekeeping
Stainless steel and ceramic construction for durability
Chronograph functionality for precise time measurement

Specifications

Brand

Longines

Family

HydroConquest

Model

HydroConquest 39 Automatic Stainless Steel / Black / Bracelet

Reference

L3.780.4.56.6

Movement

l888-5

Movement Features

Hours, Minutes, Seconds
Date
Chronometer

Case

39mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines Hydroconquest GMT, Ref: L3.790.4.96.6, 41mm

Longines - L3.790.4.96.6 · $1,825

The Longines Hydroconquest GMT features a stainless steel case with blue ceramic bezel and a blue dial.

Condition: preowned with minor desk rash on bracelet
Case size: 41mm diameter
Bezel material: blue ceramic
Bracelet material: stainless steel

Posted at

Nov 30, 2025, 4:59 PM

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Longines HydroConquest Automatic 43mm Date l3.782.4.96.6

Longines - L37824-966 · $960

A Longines HydroConquest 43mm Automatic in blue with ceramic, unidirectional rotating bezel, a solid stainless steel case, and water resistance up to 300 meters.

Condition: Excellent, used maybe 5 times since new
Case size: 43mm diameter
Depth rating: 300m

Posted at

Nov 30, 2025, 12:17 PM

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Longines Hydroconquest 41mm Sunray Grey Ref L3.782.4.76.6 Full Kit plus extra strap $950

Longines - L3.782.4.76.6 · $950

The Longines HydroConquest features a stunning sunray grey dial that shifts beautifully under light, giving it a sleek, modern look that works equally well dressed up or down. The watch wears comfortably at 41mm and the proportions make it a great everyday piece that still feels special on the wrist.

Condition: Great shape overall, with only light surface wear on the case and bracelet
Case size: 41mm diameter
Lug to lug length: 51mm
Thickness: 11.9mm

Posted at

Nov 29, 2025, 11:32 AM

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Longines HydroConquest, L3.781.4.06.9, Steel Diver, Olive, Excellent Condition.

Longines - L3.781.4.06.9 · $1,095

This Longines HydroConquest is a steel diver's watch with an olive green matte dial and a unidirectional rotating ceramic bezel. The stainless steel case measures 41mm in diameter and has a water resistance of up to 300 meters.

Condition: Excellent Condition
Case Diameter: 41mm
Thickness: 11.9mm
Bezel Type: Unidirectional rotating Green Ceramic

Posted at

Feb 5, 2025, 2:47 AM

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