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

Reference L3.781.4.56.6

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

[WTS] Longines HydroConquest GMT 41mm L3.790.4

Longines HydroConquest GMT 41mm L3.790.4

Longines - L3.790.4 · $1,799
This Longines HydroConquest GMT is a 41mm watch featuring a 6.5 inch bracelet and an aftermarket rubber strap with deployant.

  • Bracelet Length: 6.5 inches
  • Case Size: 41mm
Posted at
Feb 19, 2026, 5:35 PM
Active
[WTS] Longines HydroConquest 43mm Automatic – Black Dial – Full Kit – $1,095

Longines HydroConquest 43mm Automatic – Black Dial – Full Kit – $1,095

Longines - L3.782.4 · $1,095
This Longines HydroConquest automatic watch features a black dial and 43mm case size, which provides a strong wrist presence.

  • Condition: very good
  • Case size: 43mm diameter
  • Case wear: normal wear consistent with careful use
Posted at
Feb 18, 2026, 4:40 PM
Active
[WTS] Longines Hydroconquest 41m Green full kit with OEM bracelet and rubber strap

Longines Hydroconquest 41m Green full kit with OEM bracelet and rubber strap

A green ceramic automatic watch from Longines, part of the Hydroconquest series, featuring a Swiss movement with 72-hour power reserve.

  • Condition: Used with signs of wear
  • Case diameter: 41 mm
  • Water resistance: 300m / 30 bar
  • Movement: Longines Calibre L888 series with 72hr power reserve
Posted at
Feb 16, 2026, 4:12 PM
Active
[WTS] Longines Hydroconquest 41mm Blue - $850

Longines Hydroconquest 41mm Blue - $850

Longines - L37424966 · $850
A Longines Hydroconquest 41mm automatic diver features a blue sunburst dial, matching blue ceramic bezel and has excellent timekeeping capabilities.

  • Condition: Excellent with light signs of wear
  • Case size: 41mm diameter
  • Bezel material: Ceramic
  • Bracelet condition: Light scuffs on the clasp
Posted at
Feb 11, 2026, 1:00 PM
Active
Longines HydroConquest, L3.781.4.06.9, Steel Diver, Olive, Excellent Condition.

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
Active