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

Longines - L3.780.4.56.6 · $999

The Longines HydroConquest 39 mm Black is a stainless steel automatic watch featuring a black sunray dial, applied indices, and date at 3 o'clock. It has a matte black ceramic unidirectional bezel and a sapphire crystal with AR coating.

Condition: Very good, light desk-wear with minor hairline scratches
Case Size: 39 mm stainless steel case
Dial Color: Black
Water Resistance: 300 m

Posted at

May 10, 2025, 10:11 AM

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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

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Longines Hydroconquest 41mm w/ Box

Longines - 41mm Hydroconquest (no specific model number mentioned) · $625

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

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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

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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

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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

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[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

Longines - L3.742.4.96.6 · $800

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

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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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