Longines HydroConquest Hydroconquest Chronograph Tachymeter Silver

Reference L3.651.4.76.6

About this watch

The Longines Hydroconquest Chronograph Tachymeter Silver is a remarkable timepiece that seamlessly blends style, functionality, and durability. This stunning piece from Longines boasts a captivating design and powerful features that make it perfect for both underwater adventures and formal occasions. The watch's impressive water resistance of up to 300 meters and high-quality sapphire glass ensure its durability and scratch resistance. The reliable automatic movement, based on the ETA 7750, provides accuracy and robustness with a frequency of 28,800 vibrations per hour and a 42-hour power reserve. The chronograph feature is a standout aspect, allowing for precise timing of dives or any activity where timing is crucial. With its sleek aesthetic and sporty yet sophisticated appeal, this watch is an investment in quality and craftsmanship that stands the test of time.

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Key Features

41mm Stainless Steel Case
Sapphire Glass with Scratch Resistance
300m Water Resistance
Longines Caliber L667 Automatic Movement
Chronograph Functionality
Rotating Dive Bezel (0-60)
Stainless Steel Bracelet

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydroconquest Chronograph Tachymeter Silver

Reference

L3.651.4.76.6

Movement

l667

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph

Case

Stainless Steel 41mm

Dial Color

Silver

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines Hydroconquest 43mm - $950

Longines - Hydroconquest 43mm · $950

This Longines HydroConquest 43mm is in excellent working order and comes with a WatchMaxx full kit.

Condition: Great condition
Depth rating: 200m

Posted at

Aug 21, 2025, 12:02 AM

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Longines HydroConquest Ref. L3.780.3 – Two-Tone Steel & Rose Gold PVD – 39mm Automatic Diver – $999 Shipped

Longines - L3.780.3 · $999

a Longines HydroConquest Ref. L3.780.3, a Two-Tone Steel & Rose Gold PVD automatic diver watch with a 39mm case size.

Case Material: steel and rose gold PVD
Water Resistance: 39mm diameter

Posted at

Aug 18, 2025, 9:52 PM

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Longines Hydroconquest Automatic 41MM - Green Ceramic Bezel

Longines - L3.781.4.05.2 · $1,240

This Longines HydroConquest features a green ceramic bezel, automatic movement with date display, and a power reserve of up to 72 hours.

Condition: Like new/never worn
Case size: 41mm diameter
Water resistance: 30 bar
Crystal material: scratch-resistant sapphire crystal

Posted at

Aug 18, 2025, 7:39 PM

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For Sale – Longines HydroConquest Automatic (Ref. L3.649.4, Navy Dial) – €600 ONO Automatic 41mm with the navy blue dial.

Posted at

Aug 16, 2025, 7:17 AM

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Longines Hydroconquest Quartz 39mm - Very good condition - $500 shipped in US

Posted at

Aug 14, 2025, 7:47 PM

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Longines Hydroconquest GMT Black 41mm - Full set with extras $1850

Longines - Hydroconquest GMT Black 41mm · $1,850

41mm Longines Hydroconquest GMT with full set of extras, including OEM rubber strap and two additional straps.

Condition: Excellent
Case size: 41mm
Included extras: Longines black rubber strap, Longines style leather strap, orange cut-to-size strap

Posted at

Aug 11, 2025, 4:30 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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