Longines HydroConquest Hydroconquest 39 Quartz Black

Reference L3.647.4.56.6

About this watch

The Longines Hydroconquest 39 Quartz Black is a remarkable luxury watch that embodies elegance and functionality. With its rich history, commitment to innovation, and Swiss watchmaking excellence, this timepiece stands out in the crowded world of luxury watches. The striking black dial adorned with stick and dot indexes provides excellent readability, while the rotating bezel allows divers to easily track elapsed time underwater. Crafted from high-grade stainless steel, the 39 mm case exudes durability and luxury. At its heart lies the reliable Longines caliber L263 quartz movement, boasting 7 jewels and a power reserve of 26,280 seconds. With a water resistance rating of 300 meters, this watch is perfect for diving enthusiasts and those who enjoy water sports. Its robust design and scratch-resistant sapphire glass ensure it can withstand daily wear and tear. Whether you're a diving enthusiast or just looking for a stylish companion, the Hydroconquest 39 Quartz Black is definitely worth considering.

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Key Features

Stainless Steel Case
Quartz Movement (Longines Caliber L263)
Rotating Dive Bezel (0-60 Scale)
Sapphire Glass (Scratch Resistant)
Water Resistance: 300 m
39.00 mm Diameter
19.00 mm Lug Width

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydroconquest 39 Quartz Black

Reference

L3.647.4.56.6

Movement

l263

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 39mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines Hydroconquest Blue 39mm - $1150

Longines - Hydroconquest · $1,150

A blue dial Longines Hydroconquest 39mm watch with a full kit, in excellent condition and keeping good time.

Condition: Great condition
Year purchased: 2025
Warranty duration: 5 years

Posted at

Mar 1, 2026, 8:14 PM

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Longines Hydroconquest 41mm Two Tone

Longines - Hydroconquest 41mm Two Tone · $999

A Longines Hydroconquest 41mm Two Tone watch with a black dial and two tone finish. It is in very good condition with some minor wear.

Condition: Very Good Pre Owned Condition
Diameter: 41mm

Posted at

Feb 27, 2026, 3:34 PM

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View listing on r/WatchExchange

Longines HydroConquest GMT 41mm L3.790.4

Longines - L3.790.4 · $1,799

This Longines HydroConquest GMT is a 41mm watch featuring a 6.5 inch bracelet and an aftermarket rubber strap with deployant.

Bracelet Length: 6.5 inches
Case Size: 41mm

Posted at

Feb 19, 2026, 5:35 PM

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Longines HydroConquest 43mm Automatic – Black Dial – Full Kit – $1,095

Longines - L3.782.4 · $1,095

This Longines HydroConquest automatic watch features a black dial and 43mm case size, which provides a strong wrist presence.

Condition: very good
Case size: 43mm diameter
Case wear: normal wear consistent with careful use

Posted at

Feb 18, 2026, 4:40 PM

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Longines Hydroconquest 41m Green full kit with OEM bracelet and rubber strap

Longines - Hydroconquest 41m · $975

A green ceramic automatic watch from Longines, part of the Hydroconquest series, featuring a Swiss movement with 72-hour power reserve.

Condition: Used with signs of wear
Case diameter: 41 mm
Water resistance: 300m / 30 bar
Movement: Longines Calibre L888 series with 72hr power reserve

Posted at

Feb 16, 2026, 4:12 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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