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

Reference L3.783.4.56.6

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

About this watch

The Longines HydroConquest 41 Automatic Chronograph is a standout luxury watch that perfectly blends functionality with style. This esteemed timepiece boasts a stainless steel case, ceramic bezel, and impressive features that make it suitable for both diving enthusiasts and casual wearers alike. With its robust design, automatic chronograph movement, and water resistance of up to 300 meters, the HydroConquest is designed for serious diving adventures. The watch's sleek black dial, proprietary hands, and mixed indexes ensure effortless time-telling in any lighting condition. Powered by the Longines caliber L688.2, this watch features a column wheel ensuring smooth chronograph operation and a 54-hour power reserve. The inclusion of a date function at 4 o'clock and an adjustable stainless steel bracelet further enhance its functionality and comfort. With a perfect balance between presence and wearability, the HydroConquest is a remarkable timepiece that excels in both performance and aesthetics.
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Key Features

  • Stainless Steel Case
  • Ceramic Bezel for Enhanced Scratch Resistance
  • Automatic Chronograph Movement with Column Wheel
  • Water Resistance up to 300 Meters
  • 54-Hour Power Reserve
  • Date Function at 4 o'clock Position
  • Adjustable Stainless Steel Bracelet

Specifications

Brand
Longines
Family
HydroConquest
Model
HydroConquest 41 Automatic Chronograph Stainless Steel / Ceramic / Black / Bracelet
Reference
L3.783.4.56.6
Movement
l688-2
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Column wheel
Case
Stainless Steel 41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines HydroConquest 42mm

Longines HydroConquest 42mm

Longines - L3.788.4.96.6 · $1,900
This listing is for a brand new Longines HydroConquest 42mm blue dial watch, featuring a ceramic bezel and quick micro adjust bracelet.

  • Condition: Brand New In Box (BNIB)
  • Diameter: 42mm
  • Material: ceramic and lacquered
Posted at
May 26, 2026, 3:35 PM
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[WTS] Longines Hydroconquest 43mm -Like New

Longines Hydroconquest 43mm -Like New

Longines - L3.782.4.56.6 · $1,180
This Longines Hydroconquest is a 43mm watch with a black dial, purchased new in April and still in fantastic condition.

  • Condition: Like New
  • Case size: 43mm
  • Lug to lug length: 53
  • Thickness: 11.90mm
Posted at
May 25, 2026, 6:20 PM
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[WTS] Longines Hydroconquest 41mm - Black Dial

Longines Hydroconquest 41mm - Black Dial

Longines - L3.781.4.56.6 · $975
A Longines Hydroconquest 41mm Automatic watch with a black dial, stainless steel case, and ceramic bezel.

  • Condition: Good condition, minor scratches/scuffs in sapphire and minimal wear marks on bracelet and clasp
  • Case size: 41mm diameter
  • Bezel material: stainless steel and ceramic
  • Bracelet type: original bracelet (and links)
Posted at
May 24, 2026, 3:31 PM
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[WTS] Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,750

Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,750

Longines - L3.783.4 · $1,750
The Longines Hydroconquest Chronograph 41 is a high-performance Swiss diver's watch featuring a blue ceramic bezel and screw-down crown, powered by the L688.2 column-wheel chronograph movement with a 54-hour power reserve.

  • Condition: Very good with minor usage marks
  • Movement: Longines L688.2, automatic column wheel chronograph with 27 jewels, 28,800 bph, and a 54-hour power reserve
  • Case size: 41mm diameter
  • Thickness: 15.6mm
Posted at
May 24, 2026, 12:47 PM
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[WTS] Longines Hydroconquest 43mm

Longines Hydroconquest 43mm

Longines - L3.782.4.56.6 · $1,240
The watch is a Longines Hydroconquest model L3.782.4.56.6 with a black dial and a 43mm case size.

  • Condition: Brand new with minor use (about a month)
  • Case size: 43mm diameter
  • Lug to lug length: 53mm
  • Thickness: 11.90mm
Posted at
May 22, 2026, 4:14 PM
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[WTS] (brand new) Longines HydroConquest 39mm - $1700 shipped

(brand new) Longines HydroConquest 39mm - $1700 shipped

Longines - HydroConquest · $1,700
This brand new Longines HydroConquest features a 39mm stainless steel case with black dial and ceramic bezel insert, along with a date display at the 3 o'clock position.

  • Condition: Unworn
  • Case material: stainless steel
  • Bracelet material: stainless steel
  • Water resistance: 300m
Posted at
May 21, 2026, 8:02 PM
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[WTS] Longines hydroconquest 39 mm green

Longines hydroconquest 39 mm green

Longines - hydroconquest 39 mm green · $1,995
This Longines HydroConquest is a recent purchase from a US authorized dealer, still in its original packaging and with all papers.

  • Condition: great condition
  • Bracelet condition: has a small ding on the clasp
  • Box and paper status: all included
  • Additional strap type: aftermarket rubber
Posted at
May 21, 2026, 9:48 AM
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[WTS] Longines HydroConquest 39mm Blue – Full Set – Excellent Condition

Longines HydroConquest 39mm Blue – Full Set – Excellent Condition

Longines - HydroConquest 39mm Blue · $1,900
This Longines HydroConquest is a 39mm watch with an automatic movement and ceramic bezel, featuring a blue dial and bezel.

  • Condition: Excellent Condition
  • Case size: 39mm diameter
Posted at
May 21, 2026, 4:05 AM
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[WTS] RARE CONFIGURATION Longines HydroConquest 42mm | 2026 Gen | Green Ceramic | Green Lacquered Dial | Ref. L3.788.4.06.6 | Never Worn | Full Kit | Warranty Card 5/8/26

RARE CONFIGURATION Longines HydroConquest 42mm | 2026 Gen | Green Ceramic | Green Lacquered Dial | Ref. L3.788.4.06.6 | Never Worn | Full Kit | Warranty Card 5/8/26

Longines - L3.788.4.06.6 · $2,285
This is a rare configuration Longines HydroConquest 42mm watch with a green ceramic bezel and a green lacquered dial. It features an automatic movement, 300m water resistance, and a full kit including the original box, papers, and warranty card.

  • Condition: never worn
  • Bracelet: upgraded Longines mesh style bracelet
  • Movement: Calibre L888.5, automatic, silicon balance spring, 72hr power reserve
  • Water Resistance: 300m / 30 bar
Posted at
May 20, 2026, 3:53 PM
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