Longines HydroConquest HydroConquest 39 Automatic Stainless Steel / Black / Bracelet

Reference L3.741.4.56.6

Longines HydroConquest 39 Automatic Stainless Steel / Black / Bracelet

About this watch

The Longines HydroConquest L3.741.4.56.6 is a statement of style, precision, and functionality. This rugged watch with a stunning black dial and robust stainless steel construction is designed to withstand the rigors of underwater adventures while maintaining a sophisticated look for everyday wear. The rotating bezel marked with a clear 0-60 scale adds utility and tactile feedback. At its heart lies the Longines caliber L888.2, a movement that speaks volumes about precision and reliability with a 65-hour power reserve and frequency of 25,200 vibrations per hour. With a water resistance of 300 meters, this watch is designed for serious divers and water enthusiasts. Its combination of aesthetics and functionality makes it a worthy addition to any collection.

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Key Features

41mm Stainless Steel Case
Sapphire Glass
Rotating Dive Bezel (0-60 scale)
Longines Caliber L888.2 Movement
65-hour Power Reserve
300m Water Resistance
Adjustable Stainless Steel Bracelet

Specifications

Brand

Longines

Family

HydroConquest

Model

HydroConquest 39 Automatic Stainless Steel / Black / Bracelet

Reference

L3.741.4.56.6

Movement

l888-2

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 41mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines HydroConquest GMT 41mm Black, Full Kit, June 2025

Longines - HydroConquest GMT · $1,980

Up for sale is my mint condition Longines HydroConquest GMT, a full kit with box, papers, tags, and over 4 years left on the factory warranty.

Condition: Mint condition
Case dimensions: 41mm diameter, 49mm lug to lug, 12.9mm thickness
Movement: L844.5 with 72hrs power reserve
Water resistance: 300m

Posted at

Apr 19, 2026, 10:47 PM

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Longines Hydroconquest 39mm Black MINT

Longines - Hydroconquest 39mm Black · $2,200

A mint condition Longines Hydroconquest 39mm in black with a super comfortable bracelet and excellent bezel action.

Condition: MINT
Bracelet type: Super comfortable bracelet
Clasp type: Excellent on the fly clasp
Bezel action: Great bezel action

Posted at

Apr 19, 2026, 9:12 AM

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Longines HydroConquest 39mm Green Ceramic Bezel 2026 NEW L3.779.4.06.6 – $2800 + shipping

Longines - L3.779.4.06.6 · $2,800

This Longines HydroConquest features a stunning green ceramic bezel and matching dial, with a 39mm size that wears well on the wrist.

Condition: Brand new
Case Size: 39mm diameter
Bezel Material: green ceramic

Posted at

Apr 17, 2026, 6:00 AM

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2026 Longines Hydroconquest 39mm - Grey Bezel / Black Dial

Longines - L3-779-4-70-6 · $2,100

This 2026 Longines Hydroconquest is a 39mm grey bezel/black dial watch, purchased directly from Longines and regularly worn. It's free of major scratches or dents but has minor wear on the back of one lug.

Condition: Excellent to LNIB (like new in box)
Bracelet length: up to an 8in wrist
Bent link pin: one link pin is bent and unusable
Included accessories: all original packaging, accessories, and paperwork

Posted at

Apr 16, 2026, 3:09 PM

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Longines HydroConquest Sunray Blue- L3.790.4.96.6

Longines - L3.790.4.96.6 · $2,900

A brand new Longines HydroConquest with sunray blue dial, featuring a new box and papers.

Condition: Brand new
Box And Papers: brand new

Posted at

Apr 16, 2026, 12:11 PM

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[WTS] Longines HydroConquest GMT - Unworn, Full Set, Black Dial 41mm. The watch is in completely unworn condition and comes as a full set including box, papers, and all original accessories. Price:1700. UK-based. Happy to ship or meet depending on location. Dm if interested

Longines HydroConquest GMT - Unworn, Full Set, Black Dial 41mm. The watch is in completely unworn condition and comes as a full set including box, papers, and all original accessories. Price:1700. UK-based. Happy to ship or meet depending on location. Dm if interested

Longines - HydroConquest GMT · $1,700

The Longines HydroConquest GMT is a 41mm timepiece that comes as a full set including box, papers, and all original accessories. It is in completely unworn condition.

Condition: Unworn
Case Size: 41mm
Set: Full set including box, papers, and all original accessories

Posted at

Apr 16, 2026, 11:26 AM

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Longines Hydroconquest GMT 41mm Black (Nov 2024)- $2950 AUD (Sydney, Australia)

Longines - L3.826.4.53.2 · $2,950

a black Longines Hydroconquest GMT watch with a 41mm case size.

Material: Stainless Steel
Diameter: 41mm
Depth rating: 300m

Posted at

Apr 16, 2026, 9:54 AM

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Longines HydroConquest 41mm

Longines - L3.781.4.96.6 · $1,100

A Longines HydroConquest 41mm watch with a blue sunburst dial, featuring a clean crystal and flawless dial.

Condition: Excellent pre-owned condition
Diameter: 41mm

Posted at

Apr 15, 2026, 3:43 PM

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Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,900

Longines - L3.783.4 · $1,900

This Longines Hydroconquest Chronograph is a high-performance Swiss diver's watch featuring a blue ceramic bezel and screw-down crown, powered by the calibre L688.2 column-wheel chronograph movement with a 54-hour power reserve.

Condition: Very good with minor usage marks
Case Size: 41mm x 51mm stainless steel case, 15.6mm thickness, 21mm lug width
Movement: Longines L688.2 automatic column wheel chronograph with 27 jewels, 28,800 bph, and a 54-hour power reserve
Water Resistance: 300m (30 ATM)

Posted at

Apr 15, 2026, 11:30 AM

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