Longines HydroConquest HydroConquest 43 Automatic Stainless Steel - Yellow Gold / Black / Rubber

Reference L3.782.3.56.9

Longines HydroConquest 43 Automatic Stainless Steel - Yellow Gold / Black / Rubber

About this watch

The Longines HydroConquest L3.782.3.56.9 is a luxurious dive watch that seamlessly blends style and functionality. Its stunning sunburst finish, black dial with yellow gold accents, and 43 mm round case made from stainless steel coated with PVD gold exude elegance and sophistication. The ceramic bezel rotates smoothly, allowing for easy tracking of dive times, while the sapphire glass is virtually scratch-proof. At its heart lies the Longines caliber L888.5, a self-winding movement certified by the Swiss Official Chronometer Testing Institute (COSC) for precision and reliability. With 64 hours of power reserve and a water resistance of 300 meters, this watch is ready for any aquatic adventure. The date function is located at 3 o'clock, making it easy to stay on top of your schedule. A high-quality rubber strap provides exceptional comfort and fits snugly on the wrist. The HydroConquest strikes a perfect balance between lightness and substantiality, making it a luxury piece that's both stylish and durable.

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Key Features

43 mm round stainless steel case
Ceramic bezel with rotating dive scale
Sapphire crystal glass for scratch resistance
Chronometer-certified Longines caliber L888.5 movement
64 hours power reserve
300 meters water resistance
Date function at 3 o'clock

Specifications

Brand

Longines

Family

HydroConquest

Model

HydroConquest 43 Automatic Stainless Steel - Yellow Gold / Black / Rubber

Reference

L3.782.3.56.9

Movement

l888-5

Movement Features

Hours, Minutes, Seconds
Date
Chronometer

Case

43mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢

Longines - L3.740.3.56.7 · $600

A quartz-powered diver's watch from Longines, featuring a black dial and two-tone yellow gold PVD finish on the 41mm case.

Condition: Good (light scratches)
Case size: 41mm
Material: two tone yellow gold PVD
Movement: quartz

Posted at

May 10, 2026, 5:48 PM

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Longines Hydroconquest 43mm (updated pictures)

Longines - L3.782.4.56.6 · $1,260

This Longines Hydroconquest 43mm features a black dial on a stainless steel bracelet and has been worn only 4-6 times since its purchase. It comes with a full set, including the box, tags, warranty cards, and is still under Jomashop's 2-year warranty.

Condition: Fantastic, worn 4-6 times
Case size: 43mm
Lug to lug: 53mm
Thickness: 11.90mm

Posted at

May 9, 2026, 4:10 PM

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(brand new) Longines HydroConquest 39mm - $1800 shipped

Longines - HydroConquest · $1,800

This brand new Longines HydroConquest features a black dial, stainless steel case and bracelet, sapphire crystal with anti-reflective coating, and is powered by the L888.4 automatic movement.

Condition: Unworn
Case material: stainless steel
Bracelet material: stainless steel
Water resistance: 300m

Posted at

May 9, 2026, 1:11 PM

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2026 Longines HydroConquest 39mm - Black Ceramic - Newest Release - Full Set

Longines - L3.779.4.56.6 · $1,900

The newly redesigned Longines HydroConquest in the highly sought-after 39mm size, featuring a refined dial and upgraded bracelet.

Condition: Excellent Used Condition
Size: 39mm diameter
Thickness: ~11.9mm
Lug-to-lug length: 47mm

Posted at

May 7, 2026, 8:43 PM

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Longines Hydroconquest 43mm L3.782.4.56.6-3 weeks owned.

Longines - L3.782.4.56.6 · $1,350

A Longines Hydroconquest 43mm watch on a black dial with a stainless steel bracelet, now on an Ali Rubber strap.

Condition: Mint condition, worn approximately 5 times
Case size: 43mm diameter
Lug to lug: 53mm
Thickness: 11.90mm

Posted at

May 7, 2026, 4:43 AM

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Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢

Longines - L3.740.3.56.7 · $600

This Longines Hydroconquest is a 41mm two-tone diver's watch with a quartz movement.

Condition: Used with light scratches
Size: 41mm diameter

Posted at

May 6, 2026, 9:43 PM

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2025 Longines Hydroconquest 41mm Ref: L37814056

Longines - L37814056 · $1,300

This listing is for a 2025 Longines Hydroconquest 41mm watch, featuring an automatic self-winding caliber L888.5, unidirectional green ceramic bezel, and 300M water resistance.

Condition: Like new with some minor marks on the bracelet and buckle
Case size: 41mm
Bracelet type: Stainless steel
Water resistance: 300m depth rating

Posted at

May 6, 2026, 8:37 PM

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Longines Hydroconquest 42 mm “Green” 2026

Longines - Hydroconquest 42mm · $1,800

Up for sale is one of my new Longines Hydroconquest 42mm watches, I purchased several but find myself gravitating towards other models.

Condition: New
Case size: 42mm diameter

Posted at

May 6, 2026, 7:28 PM

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(Longines) (2026 Hydroconquest 39mm Commonwealth) Brand New and Unworn

Longines - L3.779.4.09.9 · $2,650

This is a Limited Edition Hydroconquest Commonwealth Games watch from Longines, purchased brand new from an authorized dealer and still under warranty.

Case diameter: 39mm
Box condition: great condition with exception of price sticker on outer box

Posted at

May 6, 2026, 5:30 PM

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