Longines HydroConquest HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Bracelet

Reference L3.781.4.56.6

Longines HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Bracelet

About this watch

When it comes to timepieces that combine functionality, style, and Swiss craftsmanship, the Longines HydroConquest 41 Automatic is a standout choice. Designed for those who appreciate both elegance and ruggedness, this watch is a perfect companion for diving enthusiasts and watch collectors alike. At the heart of the HydroConquest is the Longines caliber L888.2, an automatic movement that boasts impressive features: 300 meters water resistance, 65-hour power reserve, and 25,200 vibrations per hour. The HydroConquest's design is both striking and practical, with a diameter of 41.00 mm, stainless steel construction, and a rotating dive bezel with a 0-60 scale. Its black dial exudes sophistication, with mixed indexes and proprietary hands adding an element of uniqueness. Whether you're at a fancy dinner or exploring underwater, this watch maintains its elegance. The Longines HydroConquest 41 Automatic is perfect for a diverse audience, suitable for various occasions from casual outings to formal events.

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Key Features

Automatic movement with 25,200 vibrations per hour
300 meters water resistance (30 ATM)
65-hour power reserve
Stainless steel construction and closed case back
Sapphire crystal glass for scratch-resistance
Rotating dive bezel with a 0-60 scale
Black dial with mixed indexes and proprietary hands

Specifications

Brand

Longines

Family

HydroConquest

Model

HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Bracelet

Reference

L3.781.4.56.6

Movement

l888-2

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 41mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines Conquest 39 mm $600 and Longines HydroConquest 39 mm $700

Longines - L3.776.4, L3.741.4 · $600

Two Longines watches for sale, the Conquest L3.776.4 and the HydroConquest L3.741.4.

Condition: Very good
Case size: 39 mm
Year purchased: 2025
Clasp wear: minor wear on clasp from being stored at work desk

Posted at

Apr 25, 2026, 1:54 PM

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Longines HydroConquest 41 – $975

Longines - HydroConquest 41 · $975

This Longines HydroConquest 41 features a 41mm case, minimal wear, and comes with its box, papers, hangtag, and warranty card.

Condition: Very Good Pre-owned Condition
Case Size: 41mm diameter
Bracelet Condition: hairlines throughout polished surfaces, some desk wear

Posted at

Apr 25, 2026, 10:32 AM

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Brand New Longines Hydroconquest Exclusive- 42mm- L3.788.4.98.6

Longines - L3.788.4.98.6 · $2,200

The Longines Hydroconquest Exclusive features a 42mm case with a beautiful frosted blue dial and comes in brand new condition.

Condition: Brand new, unworn
Case size: 42mm

Posted at

Apr 24, 2026, 6:24 PM

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New Longines HydroConquest 42mm

Longines - HydroConquest 42mm · $2,050

A new Longines HydroConquest in the 42mm size, with a mesh band and box and papers included.

Condition: New
Case Size: 42mm
Band Type: mesh

Posted at

Apr 23, 2026, 8:54 AM

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Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,850

Longines - L3.783.4 · $1,850

The Longines Hydroconquest Chronograph is a high-performance Swiss diver's watch that features a 41mm case, blue ceramic bezel, and screw-down crown. It houses the calibre L688.2, a column-wheel chronograph movement with a 54-hour power reserve.

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

Posted at

Apr 22, 2026, 3:35 PM

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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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