Longines HydroConquest Hydroconquest 43 Automatic Ceramic / Black / Rubber

Reference L3.784.4.56.9

Longines Hydroconquest 43 Automatic Ceramic / Black / Rubber

About this watch

The Longines HydroConquest L3.784.4.56.9 is a stunning luxury watch that embodies the spirit of adventure and sophistication. With its robust design, reliable movement, and versatile aesthetics, this 43mm automatic ceramic timepiece can transition seamlessly from underwater exploration to formal occasions. The black ceramic case features a sleek, modern look, while the mixed indexes and stick hands ensure easy readability in low-light conditions. The rotating bezel with a 0-60 scale allows for precise timing of your underwater adventures, making it an essential feature for divers. With a water resistance of up to 300 meters and a durable rubber strap, this watch is perfect for both seasoned divers and casual wearers alike. The Longines caliber L888.3 movement boasts reliability and performance, with a power reserve of 65 hours and a frequency of 25,200 vibrations per hour. This watch is not just a statement piece; it's a lifestyle choice that combines luxury with functionality.

Buy Now on Jomashop

This is an affiliate link

Key Features

43mm black ceramic case
Longines caliber L888.3 automatic movement
Sapphire glass
300m water resistance
Durable rubber strap
Rotating 0-60 bezel
Mixed indexes and stick hands

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydroconquest 43 Automatic Ceramic / Black / Rubber

Reference

L3.784.4.56.9

Movement

l888-3

Movement Features

Hours, Minutes, Seconds
Date

Case

43mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines Hydroconquest Two-tone 41mm

Longines - Hydroconquest 41mm Two-Tone · $1,150

This Longines Hydroconquest Two-Tone is a 41mm watch that comes with all its original components, including a blank card.

Condition: Absolutely beautiful condition!
Case size: 41mm

Posted at

Mar 16, 2026, 1:57 PM

Active

View listing on r/WatchExchange

Longines Hydroconquest GMT 41mm

Longines - Hydroconquest GMT 41mm · $1,825

The Longines Hydroconquest GMT is a blue-dialed watch featuring a GMT complication, housed in a 41mm case. It comes with a complete full set and eBay verification.

Condition: Pre-owned with minor wear
Case size: 41mm
Bracelet condition: Minor wear

Posted at

Mar 15, 2026, 5:06 PM

Active

View listing on r/WatchExchange

Longines HydroConquest Automatic watch, 41.00 mm, stainless steel and ceramic bezel, L3.781.3.96.7– Ref L3.781.3.96.7 – Full Set – Feb 2026

Longines - L3.781.3.96.7

Bezel material: stainless steel and ceramic
Case size: 41.00 mm

Posted at

Mar 14, 2026, 7:18 PM

Active

View listing on r/WatchExchange

Longines HydroConquest GMT 41

Longines - L3.790.4 · $1,875

A Longines HydroConquest GMT 41, featuring a GMT function and 41mm case size.

Condition: Pre-owned with minor cosmetic flaws
Case size: 41mm diameter
Water resistance: not specified

Posted at

Mar 11, 2026, 3:01 PM

Active

View listing on r/WatchExchange

Longines HydroConquest 41mm - $1200 Shipped

Longines - HydroConquest 41mm · $1,200

Up for sale is my green Longines Hydroconquest 41, which I'm looking to replace with a Tudor Royal Date Day. The watch has been well taken care of and comes in excellent condition.

Condition: great condition with a small scratch on the AR coating
Bracelet condition: touched up

Posted at

Mar 10, 2026, 10:24 PM

Active

View listing on r/WatchExchange

2025 Longines HydroConquest 39 - $950

Longines - L3-780-4-56-6 · $950

This is a 2025 Longines HydroConquest 39, a great everyday diver presented as a complete set. It has honest signs of wear and comes with a watch maxx kit, box, papers, and full links.

Condition: Good overall condition with visible signs of wear
Year: 2025
Included Accessories: Watch maxx kit,Box,Papers,Full links
Shipping Options: Buyer add $30 FedEx 2-Day Air or provide own label

Posted at

Mar 7, 2026, 5:21 PM

Active

View listing on r/WatchExchange

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

Active

View listing on RolexForums