Longines Conquest Conquest 39 Automatic Black

Reference L3.676.4.58.6

About this watch

The Longines Conquest 39 Automatic Black is a masterpiece of Swiss watchmaking, blending elegance, functionality, and durability in perfect harmony. This stunning timepiece features a sleek black dial with mixed indexes, complemented by silver-tone hands that glide smoothly across the surface. The date display at 3 o'clock adds a touch of practicality to this versatile watch, suitable for both casual and formal occasions. With its robust stainless steel case, polished finish, and sapphire crystal, this watch exudes luxury and sophistication. The beating heart of the Conquest 39 is the Longines caliber L633.5, based on the renowned ETA 2824-2 movement, boasting an impressive frequency of 28,800 vibrations per hour. This automatic movement offers precision timekeeping, with a power reserve of 38 hours and 25 jewels that reduce friction for enhanced longevity. The stainless steel bracelet provides a comfortable fit, while its lightweight yet sturdy design makes it perfect for extended wear. Whether you're looking for a reliable timepiece or a statement piece that speaks to your appreciation for quality craftsmanship, the Longines Conquest 39 Automatic Black is an exceptional choice.

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Key Features

Longines caliber L633.5 movement
Sapphire crystal glass
300 meters water resistance
Stainless steel case and bracelet
Polished finish
Date display at 3 o'clock
Lightweight yet sturdy design

Specifications

Brand

Longines

Family

Conquest

Model

Conquest 39 Automatic Black

Reference

L3.676.4.58.6

Movement

l633-5

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 39mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines Conquest L3.835.4.72.6

Longines - L3.835.4.72.6 · $2,175

This Longines Conquest features a panda dial and is available for sale in excellent condition.

Condition: Excellent condition
Payment methods accepted: crypto, other methods
Meeting options: local pickup, shipping

Posted at

May 8, 2026, 12:55 PM

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2026 Longines HydroConquest 39mm - Black Ceramic - Newest Release - Full Set

Longines - L3.779.4.56.6 · $1,900

The newly redesigned Longines HydroConquest in the highly sought-after 39mm size, featuring a refined dial and upgraded bracelet.

Condition: Excellent Used Condition
Size: 39mm diameter
Thickness: ~11.9mm
Lug-to-lug length: 47mm

Posted at

May 7, 2026, 8:43 PM

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Longines Hydroconquest GMT 41mm

Longines - Hydroconquest GMT 41mm · $1,875

A black dial Longines Hydroconquest GMT watch with a 41mm case size, comes complete with a full set including a dated warranty card.

Condition: Pre-owned, minor signs of wear
Diameter: 41mm
Case material: unknown
Band: no details provided

Posted at

May 7, 2026, 3:36 PM

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Longines Hydroconquest 43mm L3.782.4.56.6-3 weeks owned.

Longines - L3.782.4.56.6 · $1,350

A Longines Hydroconquest 43mm watch on a black dial with a stainless steel bracelet, now on an Ali Rubber strap.

Condition: Mint condition, worn approximately 5 times
Case size: 43mm diameter
Lug to lug: 53mm
Thickness: 11.90mm

Posted at

May 7, 2026, 4:43 AM

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[WTS] Longines "Conquest" Swiss-Made 1970s/Early '80s Integrated Solid Link Bracelet, Calibre L.746.2 Ref.4384 (ETA 954.111) $435 (details/description in the comments)

Longines "Conquest" Swiss-Made 1970s/Early '80s Integrated Solid Link Bracelet, Calibre L.746.2 Ref.4384 (ETA 954.111) $435 (details/description in the comments)

Longines - 4384 · $435

This vintage Swiss-made Longines 'Conquest' watch is a beautiful and refined example of an integrated steel sports watch. The dial shape is very '70s with its TV dial shape, featuring a subtle in between of grey and light brown color with a vertically brushed linen texture.

Condition: Great condition considering its age, only minor general wear
Movement: Longines calibre L.746.2 (Swiss-made ESA ETA 954.111)
Bracelet Type: Integrated solid link bracelet
Bracelet Dimensions: Accommodates up to roughly 18cm wrist size

Posted at

May 6, 2026, 9:53 PM

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Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢

Longines - L3.740.3.56.7 · $600

This Longines Hydroconquest is a 41mm two-tone diver's watch with a quartz movement.

Condition: Used with light scratches
Size: 41mm diameter

Posted at

May 6, 2026, 9:43 PM

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2025 Longines Hydroconquest 41mm Ref: L37814056

Longines - L37814056 · $1,300

This listing is for a 2025 Longines Hydroconquest 41mm watch, featuring an automatic self-winding caliber L888.5, unidirectional green ceramic bezel, and 300M water resistance.

Condition: Like new with some minor marks on the bracelet and buckle
Case size: 41mm
Bracelet type: Stainless steel
Water resistance: 300m depth rating

Posted at

May 6, 2026, 8:37 PM

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Longines Hydroconquest 42 mm “Green” 2026

Longines - Hydroconquest 42mm · $1,800

Up for sale is one of my new Longines Hydroconquest 42mm watches, I purchased several but find myself gravitating towards other models.

Condition: New
Case size: 42mm diameter

Posted at

May 6, 2026, 7:28 PM

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(Longines) (2026 Hydroconquest 39mm Commonwealth) Brand New and Unworn

Longines - L3.779.4.09.9 · $2,650

This is a Limited Edition Hydroconquest Commonwealth Games watch from Longines, purchased brand new from an authorized dealer and still under warranty.

Case diameter: 39mm
Box condition: great condition with exception of price sticker on outer box

Posted at

May 6, 2026, 5:30 PM

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