Longines HydroConquest Hydroconquest Chronograph

Reference L3.644.4.96.6

About this watch

The Longines HydroConquest Chronograph, reference L3.644.4.96.6, is a stunning piece that combines sophisticated style with rugged durability. This timepiece boasts an array of impressive specifications that are sure to turn heads. At first glance, the Hydroconquest Chronograph captivates with its striking blue dial, reminiscent of the deep sea, evoking a sense of adventure. The mixed indexes and proprietary hands provide a unique touch, further enhancing its allure. Each element of the design has been meticulously crafted to ensure not just beauty but also functionality. The robust stainless steel case adds to its durability while giving it a sophisticated look. The rotating bezel is designed for divers, allowing you to track elapsed time underwater. With a diameter of 41.00 mm, this watch sits comfortably on the wrist without feeling bulky. At the core of this masterpiece is the esteemed ETA caliber 7750, renowned for its reliability and precision. This automatic movement features a frequency of 28,800 vibrations per hour and boasts 25 jewels, ensuring smooth operation. The chronograph function is a standout feature, with separate sub-dials for seconds, minutes, and hours, making timing events a breeze. With an impressive water resistance of 300 meters, the Hydroconquest Chronograph is perfect for diving enthusiasts. Its sapphire crystal and stainless steel bracelet ensure durability and style, respectively. This watch is not just a timepiece but an investment in quality and style.

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Key Features

Automatic ETA caliber 7750 movement
Stainless steel case with rotating bezel
Sapphire crystal for scratch-resistance
300m water resistance
Chronograph function with separate sub-dials
41.00mm diameter and comfortable fit
Durable stainless steel bracelet

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydroconquest Chronograph

Reference

L3.644.4.96.6

Movement

7750

Movement Features

Hours, Minutes, Small Seconds
Date, Day
Chronograph

Case

Stainless Steel 41mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

[US] 2026 Longines HydroConquest L37884906 42 mm Black Dial Blue Bezel Full Set $1,999

Longines - L37884906 · $1,999

2026 Hydroconquest in the blue bezel/black dial configuration, 42mm diameter.

Condition: great
Size: 42mm diameter

Posted at

May 4, 2026, 1:22 PM

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Longines HydroConquest 39mm Black Dial – 2026 Model, Worn Once. $1,995

Longines - HydroConquest 2026 Model · $1,995

A Longines HydroConquest with a black dial and steel bracelet for sale. It's the latest iteration from 2026, purchased recently but only worn once to a wedding.

Condition: Near mint, worn once
Case size: 39mm
Movement: Automatic

Posted at

May 4, 2026, 12:18 PM

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New Longines HydroConquest 42mm Frosted Blue Dial

Longines - HydroConquest 42mm · $2,100

A brand new Longines HydroConquest with a frosted blue dial in 42mm size.

Condition: new
Case size: 42mm
Diameter: 42mm

Posted at

May 3, 2026, 1:20 PM

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Longines HydroConquest GMT Blue Ref: L3.790.4.96.6 (2026). New/Complete. $1,999

Longines - L3.790.4.96.6 (2026) · $1,999

The Longines HydroConquest GMT Blue is a true GMT diver with a sunray blue dial, blue ceramic bezel, and Calibre L844.5 automatic movement.

Condition: Brand New
Case diameter: 41mm
Water resistance: 300m
Movement type: Calibre L844.5 automatic

Posted at

May 1, 2026, 8:25 PM

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New Longines Hydroconquest 42mm Frosted Blue Dial

Longines - Hydroconquest 42mm · $2,200

A brand new Longines Hydroconquest 42mm with a frosted blue dial, sold exclusively at Corporate boutiques. The watch comes with all links, papers, and box.

Condition: Brand new
Diameter: 42mm

Posted at

May 1, 2026, 10:36 AM

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2026 Longines HydroConquest L37884906 42 mm Black Dial Blue Bezel Full Set $1,900

Longines - L37884906 · $1,900

The Longines HydroConquest L37884906 features a black dial and blue ceramic bezel, with an automatic movement providing reliable performance. The watch has a robust build, unidirectional dive bezel, and strong water resistance, making it a capable tool watch while maintaining a refined aesthetic.

Condition: Excellent (pre-owned, minimal wear)
Year: 2026
Case size: 42mm diameter
Case material: Stainless steel

Posted at

Apr 30, 2026, 10:26 PM

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Longines HydroConquest Green Dial Two Tone $1350 41mm

Longines - HydroConquest · $1,350

This Longines HydroConquest features a green dial and two-tone design.

Posted at

Apr 28, 2026, 9:41 AM

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Longines HydroConquest 43mm

Longines - HydroConquest 43mm · $800

A Longines HydroConquest 43mm diver watch for sale, with excellent timekeeping and minimal signs of wear.

Condition: Pre-owned with normal wear
Bracelet condition: normal wear with worn clasp
Case condition: scratch-free except on the back
Papers included: true

Posted at

Apr 27, 2026, 9:05 PM

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Longines HydroConquest 39mm 2026 Commonwealth Games Limited Edition

Longines - HydroConquest 39mm 2026 Commonwealth Games Limited Edition · $3,595

This is a brand new, unworn Longines HydroConquest limited edition watch from the 2026 Commonwealth Games collection. It features a 39mm case and comes with various accessories.

Condition: Brand New Unworn
Case size: 39mm
Limited edition status: One of 2026

Posted at

Apr 27, 2026, 11:58 AM

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