Longines HydroConquest Hydroconquest Automatic 39 Blue

Reference L3.694.4.03.6

About this watch

The Longines Hydroconquest Automatic 39 Blue is a stunning timepiece that seamlessly combines style, functionality, and durability. Its vibrant blue dial grabs attention immediately, while the robust stainless steel case measures 39.00 mm in diameter, providing a perfect balance of elegance and adventure. The watch features a sapphire crystal, Arabic numeral indexes, and proprietary hands designed for enhanced visibility and functionality. The rotating dive bezel is a functional tool for divers and water sports enthusiasts, with a 0-60 scale for tracking elapsed time underwater. At the core lies the Longines caliber L619.2, an automatic movement featuring a frequency of 28,800 vibrations per hour and a power reserve of approximately 42 hours. The watch displays hours, minutes, and seconds with ease, while also featuring a date function that enhances its practicality. With a water resistance rating of 300 meters, it's suitable for swimming, snorkeling, and serious diving. The stainless steel bracelet is sturdy yet lightweight, ensuring comfort during all activities. This luxury watch positions itself in the mid-range segment, delivering value for money with its quality materials, precision movement, and brand heritage.
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Key Features

  • Longines Caliber L619.2 automatic movement
  • 300-meter water resistance rating
  • Sapphire crystal glass
  • Rotating dive bezel with 0-60 scale
  • Stainless steel case and bracelet
  • Arabic numeral indexes and proprietary hands
  • Date function

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Automatic 39 Blue
Reference
L3.694.4.03.6
Movement
l619-2
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 39mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines HydroConquest Black dial 41mm $1499

Longines HydroConquest Black dial 41mm $1499

Longines - L3.783.4.56.6 · $1,499
This Longines HydroConquest features a black dial and is powered by an automatic movement, housed in a stainless steel case with sapphire crystal and a stainless steel bracelet.

  • Condition: Full working order
  • Case diameter: 41mm
  • Crystal material: Sapphire
Posted at
May 9, 2025, 3:09 AM
Active
[WTS] Longines Hydroconquest 41mm w/ Box

Longines Hydroconquest 41mm w/ Box

A Longines Hydroconquest watch in 41mm case size, excluding crown guards.

  • Bracelet markings: noticeable
  • Wrist size: 7 inches
Posted at
May 8, 2025, 5:46 PM
Active
[WTS] Longines HydroConquest GMT 43mm Green – Full Kit - Excellent Condition

Longines HydroConquest GMT 43mm Green – Full Kit - Excellent Condition

Longines - L3.890.4.06.6 · $2,200
The Longines HydroConquest GMT is a 43mm automatic diver-watch with a ceramic bezel, 300m water resistance, and a green sunburst dial.

  • Condition: Excellent
  • Case Size: 43mm diameter
  • Movement: L844.5 (72hr power reserve, COSC certified)
  • Water Resistance: 300m depth rating
Posted at
May 4, 2025, 6:59 PM
Active
[WTS] Longines HydroConquest Blue - L3.780.4.96.6

Longines HydroConquest Blue - L3.780.4.96.6

Longines - L3.780.4.96.6 · $1,000
A Longines HydroConquest Blue watch with a retail price of $1850 is being sold for $1000.

Posted at
May 3, 2025, 4:30 PM
Active
[WTS]  Longines HydroConquest 39 mm Black (Ref. L3.780.4.56.6) – Full Kit

Longines HydroConquest 39 mm Black (Ref. L3.780.4.56.6) – Full Kit

Longines - L3.780.4.56.6 · $1,150
The Longines HydroConquest 39 mm Black is a stainless steel automatic watch with a black sunray dial, applied indices, and date at 3 o'clock. It features a matte black ceramic bezel, sapphire crystal with AR coating, and a 300m water resistance.

  • Condition: Very good, with light desk-wear and a few small hairline scratches
  • Case Size: 39 mm diameter
  • Water Resistance: 300 m depth rating
  • Movement: Longines L888 automatic, up to 72 hr power reserve
Posted at
May 3, 2025, 1:07 PM
Active
[WTS][CA-USA][H] Longines Hydroconquest 41mm Blue | Seiko Prospex “62MAS” SPB423 US Special Edition | Hamilton Murph 42mm | Seiko Speedtimer Panda SSC813 | Orient Dive 43mm  [W] $800 | $700 | $625 | $400 | $150 PayPal F&F, venmo, zelle, local cash

[CA-USA][H] Longines Hydroconquest 41mm Blue | Seiko Prospex “62MAS” SPB423 US Special Edition | Hamilton Murph 42mm | Seiko Speedtimer Panda SSC813 | Orient Dive 43mm [W] $800 | $700 | $625 | $400 | $150 PayPal F&F, venmo, zelle, local cash

Legendary Hydroconquest auto blue with gray market warranty, purchased last month and comes full kit with stock bracelet.

  • Gray market warranty: yes
  • Purchase date: last month
  • Warranty status: never been worn outside
Posted at
May 2, 2025, 9:56 PM
Active
[WTS] Longines Hydroconquest 41mm w/ Box *Price Drop*

Longines Hydroconquest 41mm w/ Box *Price Drop*

A Longines Hydroconquest watch with a 41mm case size, excluding the crown guards, and a 7 inch wrist bracelet. It comes in its original box.

  • Bracelet Size: 7 inch
  • Case Diameter: 41mm
Posted at
Apr 28, 2025, 4:52 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