Longines HydroConquest HydroConquest 39 Automatic Stainless Steel / Blue / Bracelet

Reference L3.780.4.96.6

About this watch

The Longines HydroConquest 39 Automatic is a stunning dive watch that exudes elegance and sportiness. With its matte blue dial, mixed indexes, and proprietary hands, this timepiece is both visually striking and highly readable. Protected by a sapphire crystal and boasting an impressive water resistance of 300 meters, the HydroConquest is designed to withstand even the most demanding underwater adventures. At its heart lies the Longines caliber L888.5, a chronometer-certified self-winding movement that features a silicon balance spring for enhanced accuracy and durability. The watch's robust stainless steel case and comfortable ceramic bezel add to its durability and style, while the adjustable stainless steel bracelet ensures a secure fit on any wrist size. Whether you're diving into the ocean or heading to a dinner party, the Longines HydroConquest 39 Automatic is the perfect timepiece for those who appreciate quality, style, and performance.
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Key Features

  • Stunning blue dial
  • Chronometer-certified movement
  • 300m water resistance
  • Sapphire crystal protection
  • Silicon balance spring
  • Robust stainless steel case
  • Adjustable stainless steel bracelet

Specifications

Brand
Longines
Family
HydroConquest
Model
HydroConquest 39 Automatic Stainless Steel / Blue / Bracelet
Reference
L3.780.4.96.6
Movement
l888-5
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer
Case
39mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Reduced! Longines Hydroconquest 41mm ceramic, LNIB literally spotless

Reduced! Longines Hydroconquest 41mm ceramic, LNIB literally spotless

This is a 41mm Longines Hydroconquest with a blue dial and blue ceramic bezel. It has not been worn extensively and comes with the original box and papers.

  • Condition: Like new in box
  • Diameter: 41mm
  • Bezel material: blue ceramic
Posted at
Oct 18, 2025, 8:33 AM
Active
[WTS] Longines HydroConquest – Ceramic Bezel 39mm, 2029 Warranty

Longines HydroConquest – Ceramic Bezel 39mm, 2029 Warranty

A black dial Longines Hydroconquest Ceramic Bezel in 39mm size, bought new in October 2024.

  • Condition: Great condition on the case, crystal, and dial. Minor scratches from daily wear are visible on the bracelet and buckle.
  • Warranty Valid Until: October 2029
  • Size: 39mm
Posted at
Oct 16, 2025, 5:22 PM
Active
[WTS] Longines Hydroconquest 41

Longines Hydroconquest 41

Longines - L3.781.4.05.6 · $1,380
The Longines Hydroconquest 41 features a black dial and green ceramic bezel, comes with full kit, box, papers, warranty, and original purchase receipt.

  • Condition: essentially unworn
  • Shipping: CONUS only
Posted at
Oct 15, 2025, 8:12 PM
Active
[WTS] BNIB Longines HydroConquest

BNIB Longines HydroConquest

The Longines HydroConquest is a stylish and functional dive watch designed for everyday wear. It features a stainless steel case with a sleek design and a water-resistant construction.

  • Condition: Brand new in box (BNIB)
Posted at
Oct 15, 2025, 7:10 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