Longines HydroConquest HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Bracelet

Reference L3.781.4.56.6

About this watch

When it comes to timepieces that combine functionality, style, and Swiss craftsmanship, the Longines HydroConquest 41 Automatic is a standout choice. Designed for those who appreciate both elegance and ruggedness, this watch is a perfect companion for diving enthusiasts and watch collectors alike. At the heart of the HydroConquest is the Longines caliber L888.2, an automatic movement that boasts impressive features: 300 meters water resistance, 65-hour power reserve, and 25,200 vibrations per hour. The HydroConquest's design is both striking and practical, with a diameter of 41.00 mm, stainless steel construction, and a rotating dive bezel with a 0-60 scale. Its black dial exudes sophistication, with mixed indexes and proprietary hands adding an element of uniqueness. Whether you're at a fancy dinner or exploring underwater, this watch maintains its elegance. The Longines HydroConquest 41 Automatic is perfect for a diverse audience, suitable for various occasions from casual outings to formal events.
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Key Features

  • Automatic movement with 25,200 vibrations per hour
  • 300 meters water resistance (30 ATM)
  • 65-hour power reserve
  • Stainless steel construction and closed case back
  • Sapphire crystal glass for scratch-resistance
  • Rotating dive bezel with a 0-60 scale
  • Black dial with mixed indexes and proprietary hands

Specifications

Brand
Longines
Family
HydroConquest
Model
HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Bracelet
Reference
L3.781.4.56.6
Movement
l888-2
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Hydroconquest GMT 41mm L3.790.4.56.6

Longines Hydroconquest GMT 41mm L3.790.4.56.6

Longines - L3.790.4.56.6 · $1,750
A modern classic Longines Hydroconquest GMT in great condition, with a flawless glass and excellent case.

  • Condition: Pre-loved, great condition with typical bracelet wear
  • Case Size: 41mm
  • Bracelet Condition: typical wear
Posted at
Mar 18, 2026, 5:57 PM
Active
[WTS] Longines HydroConquest 41mm Two Tone $1750

Longines HydroConquest 41mm Two Tone $1750

Longines - HydroConquest · $1,750
Longines HydroConquest in a two-tone version, sold as-is.

  • 41mm diameter: case size
Posted at
Mar 18, 2026, 12:52 PM
Active
[WTS] Longines Hydroconquest Two-tone 41mm

Longines Hydroconquest Two-tone 41mm

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
[WTS] Longines Hydroconquest GMT 41mm

Longines Hydroconquest GMT 41mm

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
[WTS] Longines HydroConquest GMT 41

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
[WTS] Longines HydroConquest 41mm - $1200 Shipped

Longines HydroConquest 41mm - $1200 Shipped

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
[WTS] 2025 Longines HydroConquest 39 - $950

2025 Longines HydroConquest 39 - $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
Longines HydroConquest, L3.781.4.06.9, Steel Diver, Olive, Excellent Condition.

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