Longines HydroConquest HydroConquest 41 Automatic Watches of Switzerland

Reference L3.781.4.05.9

About this watch

The Longines HydroConquest L3.781.4.05.9 is a masterclass in luxury watchmaking, blending artistry, precision, and adventure in one stunning package. The grey dial exudes sophistication, while the ceramic and stainless steel materials provide durability and a sleek look. The rotating bezel with 0-60 scale is perfect for divers, and the automatic Longines caliber L888.2 guarantees precision with its 21 jewels and 65-hour power reserve. This watch is more than just a time-teller; it's a statement of style and a testament to Swiss engineering. With a water resistance of 300 meters and a comfortable 41mm diameter, this HydroConquest is ready for any adventure that comes its way.
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Key Features

  • Longines caliber L888.2 automatic movement
  • Durable ceramic and stainless steel construction
  • Rotating bezel with 0-60 scale for divers

Specifications

Brand
Longines
Family
HydroConquest
Model
HydroConquest 41 Automatic Watches of Switzerland
Reference
L3.781.4.05.9
Movement
l888-2
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
41mm
Dial Color
Grey
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] 2026 Longines HydroConquest 42mm "Hulk" Green, bought 29 days ago

2026 Longines HydroConquest 42mm "Hulk" Green, bought 29 days ago

Longines - L3.788.4.06.6 · $2,100
This listing is for a brand new 2026 Longines HydroConquest 'Hulk' Green, featuring an updated dial layout and high-performance L888.5 movement.

  • Condition: Near-mint
  • Movement: L888.5
  • Bezel material: Green Ceramic
  • Depth rating: 300m
Posted at
May 3, 2026, 2:46 PM
Active
[WTS] New Longines HydroConquest 42mm Frosted Blue Dial

New Longines HydroConquest 42mm Frosted Blue Dial

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
Active
[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

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
Active
[WTS] New Longines Hydroconquest 42mm Frosted Blue Dial

New Longines Hydroconquest 42mm Frosted Blue Dial

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
[WTS] 2026 Longines HydroConquest L37884906 42 mm Black Dial Blue Bezel Full Set $1,900

2026 Longines HydroConquest L37884906 42 mm Black Dial Blue Bezel Full Set $1,900

Longines - L37884906 · $1,900
The Longines HydroConquest L37884906 features a black dial and blue ceramic bezel, with an automatic movement providing reliable performance. The watch has a robust build, unidirectional dive bezel, and strong water resistance, making it a capable tool watch while maintaining a refined aesthetic.

  • Condition: Excellent (pre-owned, minimal wear)
  • Year: 2026
  • Case size: 42mm diameter
  • Case material: Stainless steel
Posted at
Apr 30, 2026, 10:26 PM
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[WTS] Longines HydroConquest Green Dial Two Tone $1350 41mm

Longines HydroConquest Green Dial Two Tone $1350 41mm

Longines - HydroConquest · $1,350
This Longines HydroConquest features a green dial and two-tone design.

Posted at
Apr 28, 2026, 9:41 AM
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[WTS] Longines HydroConquest 43mm

Longines HydroConquest 43mm

A Longines HydroConquest 43mm diver watch for sale, with excellent timekeeping and minimal signs of wear.

  • Condition: Pre-owned with normal wear
  • Bracelet condition: normal wear with worn clasp
  • Case condition: scratch-free except on the back
  • Papers included: true
Posted at
Apr 27, 2026, 9:05 PM
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[WTS] Longines HydroConquest 39mm 2026 Commonwealth Games Limited Edition

Longines HydroConquest 39mm 2026 Commonwealth Games Limited Edition

This is a brand new, unworn Longines HydroConquest limited edition watch from the 2026 Commonwealth Games collection. It features a 39mm case and comes with various accessories.

  • Condition: Brand New Unworn
  • Case size: 39mm
  • Limited edition status: One of 2026
Posted at
Apr 27, 2026, 11:58 AM
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[WTS] Longines Hydroconquest 41mm ceramic Ref. L3.781.4.56.6

Longines Hydroconquest 41mm ceramic Ref. L3.781.4.56.6

This Longines Hydroconquest features a 41mm ceramic case, black dial, and is sized for an approximate 7.4" wrist.

  • Condition: Pre-owned with scratches on the case and bracelet
  • Case material: ceramic
  • Bracelet size: 7.4in diameter
  • Warranty: no warranty included
Posted at
Apr 26, 2026, 7:58 PM
Active