Longines HydroConquest Hydroconquest Chronograph

Reference L3.644.4.56.2

About this watch

The Longines Hydroconquest Chronograph (Model L3.644.4.56.2) is a stunning piece that combines sophistication with robust functionality. Founded in 1832, Longines has a rich heritage in watchmaking that spans nearly two centuries. The Hydroconquest line is designed for those who appreciate both style and performance. This timepiece is powered by the revered ETA 7750 movement, an automatic movement providing reliable and accurate timekeeping experience with a frequency of 28,800 vibrations per hour and a power reserve of 42 hours. The watch features a gem-set bezel, stainless steel case with a water resistance of up to 300 meters, and a black dial with mixed indexes for high visibility. The proprietary hands are designed for readability, ensuring quick time-telling in low-light conditions. With its impressive water resistance and robust chronograph functionality, this watch is perfect for divers, snorkelers, and anyone who appreciates luxury and performance.
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Key Features

  • ETA 7750 automatic movement
  • Water resistance up to 300 meters
  • Gem-set bezel
  • Stainless steel case
  • Black dial with mixed indexes
  • Proprietary hands for readability
  • Robust chronograph functionality

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Chronograph
Reference
L3.644.4.56.2
Movement
7750
Movement Features
  • Hours, Minutes, Small Seconds
  • Date, Day
  • Chronograph
Case
Stainless Steel 41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

LONGINES HYDROCONQUEST ALL CERAMIC L3.784.4

LONGINES HYDROCONQUEST ALL CERAMIC L3.784.4

Longines - L3.784.4 · $2,150.002
A black ZrO2 dial Longines HydroConquest All Ceramic watch with a ceramic case and bezel, 43mm in diameter, water resistant to 300m.

  • Condition: MINT
  • Case material: ceramic
  • Diameter: 43mm
  • Water resistance: 300m depth rating
Posted at
Jun 7, 2025, 2:44 PM
Active
FSO: Longines Hydroconquest GMT Blue 99%

FSO: Longines Hydroconquest GMT Blue 99%

Longines - Hydroconquest GMT · $1,700.002
The Longines Hydroconquest GMT is a high-end watch with a gorgeous blue dial and incredible tapering bracelet. It features a 41mm x 49.5 x 12.9 mm sapphire case with AR coating and a L844 movement. The watch has a 72-hour power reserve and a traveler style GMT function.

  • Condition: like-new, near flawless
  • Case size: 41mm
  • Bracelet type: tapering
  • Movement: L844 (25.2 bph)
Posted at
Jun 6, 2025, 4:06 PM
Active
Longines Hydroconquest GMT

Longines Hydroconquest GMT

Longines - L844 · $1,600.002
A Longines Hydroconquest GMT with a blue dial, featuring a 41mm case and traveler-style GMT function. The watch has a sapphire crystal and an L844 movement, and is accompanied by its original boxes, warranty card, and all bracelet links.

  • Condition: like-new, near flawless
  • Case Size: 41mm
  • Movement Type: L844
Posted at
Jun 6, 2025, 4:06 PM
Active
Longines Hydroconquest GMT FSOT

Longines Hydroconquest GMT FSOT

Longines - L844 · $1,600.002
A Longines Hydroconquest GMT with a blue dial and 41mm x 49.5 x 12.9mm dimensions, featuring a traveler-style GMT function and a tapering bracelet.

  • Condition: like-new, near flawless
  • Movement: L844
  • Bph: 25.2
Posted at
Jun 6, 2025, 4:06 PM
Active
[WTS] 2023 Longines HydroConquest XXII Commonweath Games LE L3.781.4.59.6 Full Set

2023 Longines HydroConquest XXII Commonweath Games LE L3.781.4.59.6 Full Set

Longines - L3.781.4.59.6 · $1,800
This Longines HydroConquest XXII Commonwealth Games LE features a 41mm steel case with a black and multi-color rotating dive bezel, a black dial, and a stainless steel bracelet. It is powered by an automatic mechanical movement.

  • Condition: Very nice preowned condition with some light scratches on the case, bracelet and buckle.
  • Case material: Steel
  • Bezel dimensions: 41mm diameter
  • Dial color: Black
Posted at
Jun 5, 2025, 6:52 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