Longines HydroConquest Hydroconquest Chronograph Tachymeter Black

Reference L3.651.4.56.6

About this watch

The Longines HydroConquest Chronograph Tachymeter Black is a testament to the brand's dedication to creating timepieces that combine functionality, style, and durability. Its striking black dial exudes a sporty yet sophisticated vibe, making it a versatile option for both casual outings and formal events. The watch features a robust movement based on the ETA/Valjoux 7750, boasting a 42-hour power reserve and a frequency of 28,800 vibrations per hour. With its impressive water resistance of 300 meters and sapphire glass protection, this watch is designed to withstand underwater activities while remaining stylish enough for everyday wear. The stainless steel bracelet adds to its luxurious feel, ensuring comfort throughout the day. Whether you're deep-sea diving or just going about your day, you can trust this watch to keep you on schedule. With a diameter of 41.00 mm, it strikes a balance between being prominent on the wrist without feeling bulky.
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Key Features

  • Longines caliber L667 automatic movement
  • 300m water resistance with sapphire glass protection
  • Stainless steel case with rotating dive bezel
  • Black dial with stick and dot indexes
  • Chronograph function with three sub-dials
  • 42-hour power reserve and 28,800 vibrations per hour
  • 41.00 mm diameter and 21.00 mm lug width

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Chronograph Tachymeter Black
Reference
L3.651.4.56.6
Movement
l667
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
Case
Stainless Steel 41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

21mm Longines HydroConquest bracelet

21mm Longines HydroConquest bracelet

Longines - HydroConquest · £150.002
  • Condition: Excellent
  • Bracelet length: 21mm
  • Days worn: 1
Posted at
May 18, 2025, 2:06 PM
Active
[WTS] Longines HydroConquest bracelet 21mm

Longines HydroConquest bracelet 21mm

A Longines HydroConquest watch with a bracelet, in excellent condition and barely worn.

  • Condition: Excellent
  • Bracelet size: 21mm
  • Shipping costs: [object Object]
Posted at
May 18, 2025, 1:59 PM
Active
Longines Hydroconquest 41 mm L3.7424.56.6 [WTS]

Longines Hydroconquest 41 mm L3.7424.56.6

A Longines Hydroconquest, a water-resistant watch designed for everyday wear.

  • Condition: Excellent
  • Wrist size suitability: 7 inch wrist
  • Box included: true
  • Purchase history: Bought from Watch Maxx
Posted at
May 17, 2025, 5:05 PM
Active
[WTS]✨ For sale: Longines HydroConquest L3.841.4.56.6 (2019) – Full Set!

✨ For sale: Longines HydroConquest L3.841.4.56.6 (2019) – Full Set!

The Longines HydroConquest L3.841.4.56.6 is an automatic watch with a 64-hour power reserve, featuring a 44mm stainless steel case and a black sunray dial.

  • Condition: Excellent
  • Case material: stainless steel
  • Diameter: 44mm
  • Water resistance: 300m
Posted at
May 13, 2025, 11:10 AM
Active
[WTS] Longines Hydroconquest GMT - Green

Longines Hydroconquest GMT - Green

The Longines Hydroconquest GMT is a stylish and functional watch featuring a GMT function, perfect for travelers or those who need to keep track of multiple time zones.

  • Condition: great condition with a slight scratch on the case and some wear on the bracelet
  • Warranty Valid Until: 02/23/2024
  • Bracelet Condition: some wear from regular usage
Posted at
May 13, 2025, 10:58 AM
Active
[WTS] Longines HydroConquest 39 mm Black (Ref. L3.780.4.56.6) – Full Kit

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

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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[WTS] Longines HydroConquest Black dial 41mm $1499

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
Active
[WTS] Longines Hydroconquest 41mm w/ Box

Longines Hydroconquest 41mm w/ Box

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
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