Longines HydroConquest HydroConquest 41 Automatic Chronograph Stainless Steel / Ceramic / Black / Rubber

Reference L3.783.4.56.9

About this watch

The Longines HydroConquest 41 Automatic Chronograph is a masterpiece of luxury watchmaking, blending functionality with elegance and precision. With its rich heritage and innovative features, this timepiece makes a statement. The round stainless steel case measures 41 mm in diameter, featuring a rotating dive bezel marked from 0-60 for tracking time underwater. The black dial boasts mixed indexes and proprietary hands for optimal readability. The Longines caliber L688.2 automatic chronograph movement boasts a frequency of 28,800 vibrations per hour and a power reserve of 54 hours, ensuring reliability and accuracy. Water resistance reaches an impressive 300 meters, suitable for diving and water sports. A scratch-resistant sapphire glass protects the dial, while a comfortable rubber strap provides a secure fit.
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Key Features

  • 41mm Stainless Steel Case
  • Rotating Dive Bezel (0-60)
  • Longines Caliber L688.2 Automatic Chronograph Movement
  • Scratch-Resistant Sapphire Glass
  • 300m Water Resistance
  • Black Dial with Mixed Indexes and Proprietary Hands

Specifications

Brand
Longines
Family
HydroConquest
Model
HydroConquest 41 Automatic Chronograph Stainless Steel / Ceramic / Black / Rubber
Reference
L3.783.4.56.9
Movement
l688-2
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Column wheel
Case
Stainless Steel 41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] New Release, 1 week old, Longines Hydroconquest 39 mm

New Release, 1 week old, Longines Hydroconquest 39 mm

A new release Longines Hydroconquest in a smaller 39mm diameter, purchased from an authorized dealer and still under warranty. It's been lightly worn for only a week.

  • Condition: Perfect condition, 1 week old
  • Case diameter: 39mm
  • Lug to lug length: 48.1mm
  • Thickness: 11.7mm
Posted at
Apr 4, 2026, 6:31 PM
Active
[WTS] Longines Hydroconquest GMT 41mm

Longines Hydroconquest GMT 41mm

Beautiful Longines Hydroconquest GMT with a 41mm case, included in the sale are extra links, warranty card, and original packaging.

  • Condition: very good condition
  • Water Resistance: not specified
  • Warranty Years: 2
Posted at
Apr 2, 2026, 5:00 PM
Active
[WTS] Longines Hydroconquest Green Dial Black Bezel

Longines Hydroconquest Green Dial Black Bezel

Longines - Hydroconquest · $1,250
  • Condition: Perfect
  • Year Of Purchase: August 2025
  • Crown And Buckle Straps: 2 additional
  • Shipping Info: US only
Posted at
Apr 1, 2026, 9:51 AM
Active
[WTS] Longines Hydroconquest GMT - 41mm - Sunray Brown - Box and Papers - Excellent Condition

Longines Hydroconquest GMT - 41mm - Sunray Brown - Box and Papers - Excellent Condition

The Longines Hydroconquest GMT features a 41mm stainless steel case, a true GMT movement, and a brown sunray dial with a brown ceramic bezel insert. It has a quick-adjust bracelet and a sapphire crystal with anti-reflective coating.

  • Condition: Excellent, some minor hairline scratches on the bracelet
  • Case size: 41mm
  • Lug width: 21mm
  • Thickness: 12.8mm
Posted at
Mar 31, 2026, 1:25 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