Longines HydroConquest Hydroconquest GMT 41 Stainless Steel / Black / Rubber

Reference L3.790.4.56.9

About this watch

The Longines HydroConquest GMT 41 is a masterpiece that effortlessly blends elegance with practicality, making it a versatile choice for both casual outings and formal occasions. Crafted from high-quality stainless steel, this timepiece boasts exceptional durability and a premium feel. The ceramic bezel adds a touch of sophistication while enhancing scratch resistance. With a diameter of 41.00 mm and a height of 12.90 mm, this watch strikes a balance between being substantial yet comfortable on the wrist. Its striking black sunburst dial catches the light beautifully, while the rotating bezel marked from 0-60 makes it perfect for diving enthusiasts who need precise timing. At the heart of the HydroConquest GMT 41 is the Longines caliber L844.4, an automatic movement that is reliable and efficient. With a 65-hour power reserve, you can take this watch off for a weekend and it will still be ticking when you put it back on. The movement's robustness and silicon balance spring improve precision and reduce wear over time.
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Key Features

  • Automatic Longines caliber L844.4
  • 300-meter water resistance
  • Stainless Steel and Ceramic construction
  • Elegant black sunburst dial with rotating bezel
  • 65-hour power reserve
  • Silicon balance spring for improved precision

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest GMT 41 Stainless Steel / Black / Rubber
Reference
L3.790.4.56.9
Movement
l844-4
Movement Features
  • Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable)
  • Date
Case
41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

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

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
Active
[WTS] Longines HydroConquest GMT 41mm Black, Full Kit, June 2025

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

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
Active
[WTS] Longines Hydroconquest 39mm Black MINT

Longines Hydroconquest 39mm Black MINT

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

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
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