Longines HydroConquest Hydroconquest Chronograph Tachymeter

Reference L3.651.4.16.6

About this watch

The Longines HydroConquest L3.651.4.16.6 is a robust and stylish diver's watch that combines performance with elegance. Its 41mm stainless steel case features a rotating bezel, marked from 0 to 60, for precise timing underwater. The sapphire crystal glass is scratch-resistant and adds to the watch's durability. A closed case back limits visibility of the movement but adds to the watch's sturdiness. With a lug width of 21mm, the Hydroconquest comes with a well-crafted stainless steel bracelet that feels solid yet comfortable on the wrist. The chronograph feature is a highlight, providing additional functionality for timing events. The date function ensures you're always on top of your schedule. Whether diving or just out for a casual lunch, this watch feels right at home. Its impressive 300m water resistance makes it a reliable companion for underwater adventures. With a reliable and accurate automatic movement, the Hydroconquest keeps time with impressive accuracy. A power reserve of 42 hours ensures you can take it off for a day or two without worrying about winding it again. The Longines HydroConquest is more than just a watch; it's a statement piece that combines performance with elegance.
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Key Features

  • Longines caliber L667 automatic movement
  • 41mm stainless steel case with rotating bezel
  • Sapphire crystal glass for scratch-resistance and durability
  • 300m water resistance for underwater adventures
  • Chronograph feature for timing events
  • Date function for scheduling
  • 42-hour power reserve for reliability

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Chronograph Tachymeter
Reference
L3.651.4.16.6
Movement
l667
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
Case
Stainless Steel 41mm
Dial Color
White
Crystal
Sapphire
Water Resistance
300

Current Listings

Longines Hydroconquest GMT

Longines Hydroconquest GMT

Longines - L844 · $1,600.002
A Longines Hydroconquest GMT with a blue dial, featuring a 41mm case and traveler-style GMT function. The watch has a sapphire crystal and an L844 movement, and is accompanied by its original boxes, warranty card, and all bracelet links.

  • Condition: like-new, near flawless
  • Case Size: 41mm
  • Movement Type: L844
Posted at
Jun 6, 2025, 4:06 PM
Active
Longines Hydroconquest GMT FSOT

Longines Hydroconquest GMT FSOT

Longines - L844 · $1,600.002
A Longines Hydroconquest GMT with a blue dial and 41mm x 49.5 x 12.9mm dimensions, featuring a traveler-style GMT function and a tapering bracelet.

  • Condition: like-new, near flawless
  • Movement: L844
  • Bph: 25.2
Posted at
Jun 6, 2025, 4:06 PM
Active
[WTS] 2023 Longines HydroConquest XXII Commonweath Games LE L3.781.4.59.6 Full Set

2023 Longines HydroConquest XXII Commonweath Games LE L3.781.4.59.6 Full Set

Longines - L3.781.4.59.6 · $1,800
This Longines HydroConquest XXII Commonwealth Games LE features a 41mm steel case with a black and multi-color rotating dive bezel, a black dial, and a stainless steel bracelet. It is powered by an automatic mechanical movement.

  • Condition: Very nice preowned condition with some light scratches on the case, bracelet and buckle.
  • Case material: Steel
  • Bezel dimensions: 41mm diameter
  • Dial color: Black
Posted at
Jun 5, 2025, 6:52 PM
Active
Longines Hydroconquest GMT Black Dial

Longines Hydroconquest GMT Black Dial

Longines - Hydroconquest GMT · $1,800.002
This Longines Hydroconquest GMT is a travel watch that has been well-maintained and stored since October 2024. It features a black dial and comes with its original boxes, warranty card, booklets, hang tag, and all links.

  • Condition: excellent condition
  • Box Contents: inner and outer box, warranty card, booklet, hang tag
  • Clasp Condition: minor desk dive marks
Posted at
Jun 2, 2025, 3:20 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