Longines HydroConquest Hydroconquest Chronograph Tachymeter Black Rubber

Reference L3.651.4.56.2

About this watch

The Longines Hydroconquest Chronograph Tachymeter Black Rubber (Model: L3.651.4.56.2) is a masterclass in luxury watchmaking, combining style, functionality, and durability in one sleek package. At the heart of this timepiece lies the reliable Longines Caliber L667 automatic movement, boasting 25 jewels and a 42-hour power reserve. The robust stainless steel case measures 41mm in diameter, while the scratch-resistant sapphire crystal ensures the dial remains pristine over time. A high-quality black rubber strap adds comfort and flexibility, making it perfect for active lifestyles. The chronograph functionality is a game-changer for those who appreciate precision timing, with easy-to-manipulate pushers and a subtle date function at the 6 o'clock mark. With its impressive 300-meter water resistance, this watch shines in aquatic environments, allowing you to dive without a second thought. Whether you're a seasoned diver or just looking for a stylish timepiece, the Longines Hydroconquest is an excellent choice, offering fantastic value for its price point of $1540.
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Key Features

  • Longines Caliber L667 automatic movement
  • 41mm stainless steel case
  • Scratch-resistant sapphire crystal
  • 300-meter water resistance
  • Chronograph functionality with date display
  • High-quality black rubber strap
  • 42-hour power reserve

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Chronograph Tachymeter Black Rubber
Reference
L3.651.4.56.2
Movement
l667
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
Case
Stainless Steel 41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Hydroconquest 43mm - $950

Longines Hydroconquest 43mm - $950

This Longines HydroConquest 43mm is in excellent working order and comes with a WatchMaxx full kit.

  • Condition: Great condition
  • Depth rating: 200m
Posted at
Aug 21, 2025, 12:02 AM
Active
[WTS] Longines HydroConquest Ref. L3.780.3 – Two-Tone Steel & Rose Gold PVD – 39mm Automatic Diver – $999 Shipped

Longines HydroConquest Ref. L3.780.3 – Two-Tone Steel & Rose Gold PVD – 39mm Automatic Diver – $999 Shipped

Longines - L3.780.3 · $999
a Longines HydroConquest Ref. L3.780.3, a Two-Tone Steel & Rose Gold PVD automatic diver watch with a 39mm case size.

  • Case Material: steel and rose gold PVD
  • Water Resistance: 39mm diameter
Posted at
Aug 18, 2025, 9:52 PM
Active
[WTS] Longines Hydroconquest Automatic 41MM - Green Ceramic Bezel

Longines Hydroconquest Automatic 41MM - Green Ceramic Bezel

Longines - L3.781.4.05.2 · $1,240
This Longines HydroConquest features a green ceramic bezel, automatic movement with date display, and a power reserve of up to 72 hours.

  • Condition: Like new/never worn
  • Case size: 41mm diameter
  • Water resistance: 30 bar
  • Crystal material: scratch-resistant sapphire crystal
Posted at
Aug 18, 2025, 7:39 PM
Active
[WTS] Longines Hydroconquest GMT Black 41mm - Full set with extras $1850

Longines Hydroconquest GMT Black 41mm - Full set with extras $1850

41mm Longines Hydroconquest GMT with full set of extras, including OEM rubber strap and two additional straps.

  • Condition: Excellent
  • Case size: 41mm
  • Included extras: Longines black rubber strap, Longines style leather strap, orange cut-to-size strap
Posted at
Aug 11, 2025, 4:30 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