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

Longines Hydroconquest GMT, Ref: L3.790.4.96.6, 41mm

Longines - L3.790.4.96.6 · $1,825

The Longines Hydroconquest GMT features a stainless steel case with blue ceramic bezel and a blue dial.

Condition: preowned with minor desk rash on bracelet
Case size: 41mm diameter
Bezel material: blue ceramic
Bracelet material: stainless steel

Posted at

Nov 30, 2025, 4:59 PM

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Longines HydroConquest Automatic 43mm Date l3.782.4.96.6

Longines - L37824-966 · $960

A Longines HydroConquest 43mm Automatic in blue with ceramic, unidirectional rotating bezel, a solid stainless steel case, and water resistance up to 300 meters.

Condition: Excellent, used maybe 5 times since new
Case size: 43mm diameter
Depth rating: 300m

Posted at

Nov 30, 2025, 12:17 PM

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Longines Hydroconquest 41mm Sunray Grey Ref L3.782.4.76.6 Full Kit plus extra strap $950

Longines - L3.782.4.76.6 · $950

The Longines HydroConquest features a stunning sunray grey dial that shifts beautifully under light, giving it a sleek, modern look that works equally well dressed up or down. The watch wears comfortably at 41mm and the proportions make it a great everyday piece that still feels special on the wrist.

Condition: Great shape overall, with only light surface wear on the case and bracelet
Case size: 41mm diameter
Lug to lug length: 51mm
Thickness: 11.9mm

Posted at

Nov 29, 2025, 11:32 AM

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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

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