Longines HydroConquest Hydroconquest 39 Quartz Black

Reference L3.647.4.56.6

About this watch

The Longines Hydroconquest 39 Quartz Black is a remarkable luxury watch that embodies elegance and functionality. With its rich history, commitment to innovation, and Swiss watchmaking excellence, this timepiece stands out in the crowded world of luxury watches. The striking black dial adorned with stick and dot indexes provides excellent readability, while the rotating bezel allows divers to easily track elapsed time underwater. Crafted from high-grade stainless steel, the 39 mm case exudes durability and luxury. At its heart lies the reliable Longines caliber L263 quartz movement, boasting 7 jewels and a power reserve of 26,280 seconds. With a water resistance rating of 300 meters, this watch is perfect for diving enthusiasts and those who enjoy water sports. Its robust design and scratch-resistant sapphire glass ensure it can withstand daily wear and tear. Whether you're a diving enthusiast or just looking for a stylish companion, the Hydroconquest 39 Quartz Black is definitely worth considering.
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Key Features

  • Stainless Steel Case
  • Quartz Movement (Longines Caliber L263)
  • Rotating Dive Bezel (0-60 Scale)
  • Sapphire Glass (Scratch Resistant)
  • Water Resistance: 300 m
  • 39.00 mm Diameter
  • 19.00 mm Lug Width

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest 39 Quartz Black
Reference
L3.647.4.56.6
Movement
l263
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 39mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Hydroconquest GMT, Ref: L3.790.4.96.6, 41mm

Longines Hydroconquest GMT, Ref: L3.790.4.96.6, 41mm

Longines - L3.790.4.96.6 · $1,825
The Longines Hydroconquest GMT features a stainless steel case with blue ceramic bezel and a blue dial.

  • Condition: preowned with minor desk rash on bracelet
  • Case size: 41mm diameter
  • Bezel material: blue ceramic
  • Bracelet material: stainless steel
Posted at
Nov 30, 2025, 4:59 PM
Active
[WTS] Longines HydroConquest Automatic 43mm Date l3.782.4.96.6

Longines HydroConquest Automatic 43mm Date l3.782.4.96.6

Longines - L37824-966 · $960
A Longines HydroConquest 43mm Automatic in blue with ceramic, unidirectional rotating bezel, a solid stainless steel case, and water resistance up to 300 meters.

  • Condition: Excellent, used maybe 5 times since new
  • Case size: 43mm diameter
  • Depth rating: 300m
Posted at
Nov 30, 2025, 12:17 PM
Active
[WTS] Longines Hydroconquest 41mm Sunray Grey Ref L3.782.4.76.6 Full Kit plus extra strap $950

Longines Hydroconquest 41mm Sunray Grey Ref L3.782.4.76.6 Full Kit plus extra strap $950

The Longines HydroConquest features a stunning sunray grey dial that shifts beautifully under light, giving it a sleek, modern look that works equally well dressed up or down. The watch wears comfortably at 41mm and the proportions make it a great everyday piece that still feels special on the wrist.

  • Condition: Great shape overall, with only light surface wear on the case and bracelet
  • Case size: 41mm diameter
  • Lug to lug length: 51mm
  • Thickness: 11.9mm
Posted at
Nov 29, 2025, 11:32 AM
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