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 L3.781.4.06.6 (RESERVED POST)

Longines Hydroconquest L3.781.4.06.6 (RESERVED POST)

Longines - L3.781.4.06.6 · $1,315
The seller is listing a Longines Hydroconquest watch for sale, which was previously posted as wanted in the r/watchexchange community.

  • Status: reserved post
Posted at
Jul 29, 2025, 4:04 PM
Active
[WTS] 2024 Longines Hydroconquest 43mm Blue Automatic L3.782.4.96.6

2024 Longines Hydroconquest 43mm Blue Automatic L3.782.4.96.6

This listing is for a 2024 Longines Hydroconquest 43mm blue automatic watch, purchased new in May 2024 from Jomashop.

  • Condition: Fair
  • Size: 43mm
  • Case condition: Good
Posted at
Jul 23, 2025, 5:33 PM
Active
Longines Hydroconquest 39mm 2024model

Longines Hydroconquest 39mm 2024model

This watch was purchased brand new on 12/24 and has been worn only a few times. It is accurate and in great condition.

  • Condition: Pre-owned, lightly worn
  • Purchase year: 2024
  • Warranty: full factory warranty from AD
Posted at
Jul 22, 2025, 4:34 PM
Active
Longines Hydroconquest 39mm New 12/24

Longines Hydroconquest 39mm New 12/24

This Longines Hydroconquest 39mm is a brand new watch that was only worn on the bracelet a few times. It has been tried on with various straps and comes with a full five-year factory warranty from an authorized dealer.

  • Condition: Pre-owned, lightly worn
  • Warranty: Full five year factory warranty
  • Origin: Purchased from Authorized Dealer (AD)
  • Payment Methods: Accepts Zelle, Venmo, PayPal F&F
Posted at
Jul 22, 2025, 4:34 PM
Active