Longines HydroConquest Hydroconquest Automatic 41 Blue

Reference L3.642.4.96.6

About this watch

The Longines Hydroconquest Automatic 41 Blue embodies the perfect blend of style and functionality, featuring a stunning blue dial, robust stainless steel case, and reliable automatic movement. Its rotating bezel with 0-60 markings makes it ideal for divers, while its comfortable design allows for easy wear in both formal and casual settings. With its impressive 300m water resistance and lightweight construction, this watch is perfect for those who love the water. The Hydroconquest's exceptional build quality, combined with Longines' reputation for craftsmanship, make it a standout choice for any watch enthusiast. Whether you're timing a dive or just need to keep track of your schedule, this watch delivers excellent accuracy and reliability. Its versatile design allows it to transition seamlessly from beach to town, making it the ultimate companion for adventurous spirits. With its stunning blue dial, robust build, and reliable movement, the Longines Hydroconquest Automatic 41 Blue is a true gem in the world of luxury watches.

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Key Features

41mm stainless steel case
Rotating bezel with 0-60 markings
300m water resistance
Longines caliber L633.5 automatic movement
Sapphire glass crystal
Date function at 3 o'clock
Luminous hands and markers

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydroconquest Automatic 41 Blue

Reference

L3.642.4.96.6

Movement

l633-5

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 41mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines Hydroconquest 41mm - Black Dial

Longines - L3.781.4.56.6 · $975

A Longines Hydroconquest 41mm Automatic watch with a black dial, stainless steel case, and ceramic bezel.

Condition: Good condition, minor scratches/scuffs in sapphire and minimal wear marks on bracelet and clasp
Case size: 41mm diameter
Bezel material: stainless steel and ceramic
Bracelet type: original bracelet (and links)

Posted at

May 24, 2026, 3:31 PM

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Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,750

Longines - L3.783.4 · $1,750

The Longines Hydroconquest Chronograph 41 is a high-performance Swiss diver's watch featuring a blue ceramic bezel and screw-down crown, powered by the L688.2 column-wheel chronograph movement with a 54-hour power reserve.

Condition: Very good with minor usage marks
Movement: Longines L688.2, automatic column wheel chronograph with 27 jewels, 28,800 bph, and a 54-hour power reserve
Case size: 41mm diameter
Thickness: 15.6mm

Posted at

May 24, 2026, 12:47 PM

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Longines Hydroconquest 43mm

Longines - L3.782.4.56.6 · $1,240

The watch is a Longines Hydroconquest model L3.782.4.56.6 with a black dial and a 43mm case size.

Condition: Brand new with minor use (about a month)
Case size: 43mm diameter
Lug to lug length: 53mm
Thickness: 11.90mm

Posted at

May 22, 2026, 4:14 PM

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(brand new) Longines HydroConquest 39mm - $1700 shipped

Longines - HydroConquest · $1,700

This brand new Longines HydroConquest features a 39mm stainless steel case with black dial and ceramic bezel insert, along with a date display at the 3 o'clock position.

Condition: Unworn
Case material: stainless steel
Bracelet material: stainless steel
Water resistance: 300m

Posted at

May 21, 2026, 8:02 PM

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Longines hydroconquest 39 mm green

Longines - hydroconquest 39 mm green · $1,995

This Longines HydroConquest is a recent purchase from a US authorized dealer, still in its original packaging and with all papers.

Condition: great condition
Bracelet condition: has a small ding on the clasp
Box and paper status: all included
Additional strap type: aftermarket rubber

Posted at

May 21, 2026, 9:48 AM

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Longines HydroConquest 39mm Blue – Full Set – Excellent Condition

Longines - HydroConquest 39mm Blue · $1,900

This Longines HydroConquest is a 39mm watch with an automatic movement and ceramic bezel, featuring a blue dial and bezel.

Condition: Excellent Condition
Case size: 39mm diameter

Posted at

May 21, 2026, 4:05 AM

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[WTS] RARE CONFIGURATION Longines HydroConquest 42mm | 2026 Gen | Green Ceramic | Green Lacquered Dial | Ref. L3.788.4.06.6 | Never Worn | Full Kit | Warranty Card 5/8/26

RARE CONFIGURATION Longines HydroConquest 42mm | 2026 Gen | Green Ceramic | Green Lacquered Dial | Ref. L3.788.4.06.6 | Never Worn | Full Kit | Warranty Card 5/8/26

Longines - L3.788.4.06.6 · $2,285

This is a rare configuration Longines HydroConquest 42mm watch with a green ceramic bezel and a green lacquered dial. It features an automatic movement, 300m water resistance, and a full kit including the original box, papers, and warranty card.

Condition: never worn
Bracelet: upgraded Longines mesh style bracelet
Movement: Calibre L888.5, automatic, silicon balance spring, 72hr power reserve
Water Resistance: 300m / 30 bar

Posted at

May 20, 2026, 3:53 PM

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