Longines HydroConquest HydroConquest 39 Automatic Stainless Steel - Pink Gold / Grey / Bracelet

Reference L3.780.3.78.6

About this watch

The Longines HydroConquest L3.780.3.78.6 is a stunning luxury watch that combines elegance with functionality. This automatic stainless steel model features a 39mm diameter, 12.20mm height, and ceramic, stainless steel materials for durability. With a water resistance rating of 300 meters, it's perfect for diving enthusiasts or casual wearers who appreciate a robust yet stylish watch. The sleek design boasts pink gold accents, a grey matte finish, and mixed indexes that provide unique visual appeal. The proprietary hands ensure optimal legibility, making it easy to tell the time in any environment. Additional features include a date function, rotating bezel with 0-60 scale, and adjustable clasp for customizable comfort.
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Key Features

  • Longines caliber L888.5 automatic movement
  • 300m water resistance rating
  • 39mm diameter stainless steel case
  • Ceramic and PVD gold coating for durability
  • Silicon balance spring for enhanced accuracy
  • 64-hour power reserve
  • Date function and rotating bezel with 0-60 scale

Specifications

Brand
Longines
Family
HydroConquest
Model
HydroConquest 39 Automatic Stainless Steel - Pink Gold / Grey / Bracelet
Reference
L3.780.3.78.6
Movement
l888-5
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer
Case
39mm
Dial Color
Grey
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Hydroconquest 43mm (updated pictures)

Longines Hydroconquest 43mm (updated pictures)

Longines - L3.782.4.56.6 · $1,260
This Longines Hydroconquest 43mm features a black dial on a stainless steel bracelet and has been worn only 4-6 times since its purchase. It comes with a full set, including the box, tags, warranty cards, and is still under Jomashop's 2-year warranty.

  • Condition: Fantastic, worn 4-6 times
  • Case size: 43mm
  • Lug to lug: 53mm
  • Thickness: 11.90mm
Posted at
May 9, 2026, 4:10 PM
Active
[WTS] (brand new) Longines HydroConquest 39mm - $1800 shipped

(brand new) Longines HydroConquest 39mm - $1800 shipped

Longines - HydroConquest · $1,800
This brand new Longines HydroConquest features a black dial, stainless steel case and bracelet, sapphire crystal with anti-reflective coating, and is powered by the L888.4 automatic movement.

  • Condition: Unworn
  • Case material: stainless steel
  • Bracelet material: stainless steel
  • Water resistance: 300m
Posted at
May 9, 2026, 1:11 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