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

Reference L3.780.3.78.9

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

About this watch

The Longines HydroConquest 39 Automatic Stainless Steel is a remarkable timepiece that beautifully merges style, functionality, and comfort. With its rich heritage, reliable movement, and stunning aesthetics, you’re not just buying a watch; you’re investing in a piece of art that tells time. The watch features a self-winding movement with a silicon balance spring, ensuring accuracy and reliability. Its impressive water resistance of 300 meters makes it designed specifically for underwater use. The rotating bezel allows for easy tracking of dive times, making it a practical choice for underwater enthusiasts. Longines has chosen high-quality materials for this watch, combining ceramic and stainless steel for durability and aesthetic appeal. The PVD gold coating provides a luxurious finish that is sure to turn heads. This watch is comfortable to wear all day long, thanks to its rubber strap designed for a snug fit while ensuring breathability.
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Key Features

  • 39mm round case made from stainless steel with PVD gold coating
  • Sapphire crystal glass for scratch resistance and clarity
  • Chronometer certified automatic movement (Longines caliber L888.5)
  • Water resistance of 300 meters
  • Rotating bezel for easy tracking of dive times
  • Rubber strap for comfort and breathability

Specifications

Brand
Longines
Family
HydroConquest
Model
HydroConquest 39 Automatic Stainless Steel - Pink Gold / Grey / Rubber
Reference
L3.780.3.78.9
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 L3.782.4.56.6-3 weeks owned.

Longines Hydroconquest 43mm L3.782.4.56.6-3 weeks owned.

Longines - L3.782.4.56.6 · $1,350
A Longines Hydroconquest 43mm watch on a black dial with a stainless steel bracelet, now on an Ali Rubber strap.

  • Condition: Mint condition, worn approximately 5 times
  • Case size: 43mm diameter
  • Lug to lug: 53mm
  • Thickness: 11.90mm
Posted at
May 7, 2026, 4:43 AM
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[WTS] Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢

Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢

Longines - L3.740.3.56.7 · $600
This Longines Hydroconquest is a 41mm two-tone diver's watch with a quartz movement.

  • Condition: Used with light scratches
  • Size: 41mm diameter
Posted at
May 6, 2026, 9:43 PM
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[WTS] 2025 Longines Hydroconquest 41mm Ref: L37814056

2025 Longines Hydroconquest 41mm Ref: L37814056

Longines - L37814056 · $1,300
This listing is for a 2025 Longines Hydroconquest 41mm watch, featuring an automatic self-winding caliber L888.5, unidirectional green ceramic bezel, and 300M water resistance.

  • Condition: Like new with some minor marks on the bracelet and buckle
  • Case size: 41mm
  • Bracelet type: Stainless steel
  • Water resistance: 300m depth rating
Posted at
May 6, 2026, 8:37 PM
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[WTS] Longines Hydroconquest 42 mm “Green” 2026

Longines Hydroconquest 42 mm “Green” 2026

Longines - Hydroconquest 42mm · $1,800
Up for sale is one of my new Longines Hydroconquest 42mm watches, I purchased several but find myself gravitating towards other models.

  • Condition: New
  • Case size: 42mm diameter
Posted at
May 6, 2026, 7:28 PM
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[WTS] (Longines) (2026 Hydroconquest 39mm Commonwealth) Brand New and Unworn

(Longines) (2026 Hydroconquest 39mm Commonwealth) Brand New and Unworn

Longines - L3.779.4.09.9 · $2,650
This is a Limited Edition Hydroconquest Commonwealth Games watch from Longines, purchased brand new from an authorized dealer and still under warranty.

  • Case diameter: 39mm
  • Box condition: great condition with exception of price sticker on outer box
Posted at
May 6, 2026, 5:30 PM
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[WTS] Longines HydroConquest 39mm Black Dial – 2026 Model, Worn Once. $1,995

Longines HydroConquest 39mm Black Dial – 2026 Model, Worn Once. $1,995

Longines - HydroConquest 2026 Model · $1,995
A Longines HydroConquest with a black dial and steel bracelet for sale. It's the latest iteration from 2026, purchased recently but only worn once to a wedding.

  • Condition: Near mint, worn once
  • Case size: 39mm
  • Movement: Automatic
Posted at
May 4, 2026, 12:18 PM
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[WTS] New Longines HydroConquest 42mm Frosted Blue Dial

New Longines HydroConquest 42mm Frosted Blue Dial

Longines - HydroConquest 42mm · $2,100
A brand new Longines HydroConquest with a frosted blue dial in 42mm size.

  • Condition: new
  • Case size: 42mm
  • Diameter: 42mm
Posted at
May 3, 2026, 1:20 PM
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[WTS] Longines HydroConquest GMT Blue Ref: L3.790.4.96.6 (2026). New/Complete. $1,999

Longines HydroConquest GMT Blue Ref: L3.790.4.96.6 (2026). New/Complete. $1,999

Longines - L3.790.4.96.6 (2026) · $1,999
The Longines HydroConquest GMT Blue is a true GMT diver with a sunray blue dial, blue ceramic bezel, and Calibre L844.5 automatic movement.

  • Condition: Brand New
  • Case diameter: 41mm
  • Water resistance: 300m
  • Movement type: Calibre L844.5 automatic
Posted at
May 1, 2026, 8:25 PM
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[WTS] New Longines Hydroconquest 42mm Frosted Blue Dial

New Longines Hydroconquest 42mm Frosted Blue Dial

Longines - Hydroconquest 42mm · $2,200
A brand new Longines Hydroconquest 42mm with a frosted blue dial, sold exclusively at Corporate boutiques. The watch comes with all links, papers, and box.

  • Condition: Brand new
  • Diameter: 42mm
Posted at
May 1, 2026, 10:36 AM
Active
View listing on r/WatchExchange