Longines Conquest Conquest Chronograph

Reference L3.678.4.56.6

About this watch

The Longines Conquest Chronograph is a masterpiece of luxury watchmaking, combining elegance with precision. Its sleek design, adorned with stick and dot indexes, provides a clean, modern look. The chronograph sub-dials are strategically placed for functionality without overwhelming the design, striking a perfect balance between style and utility. At its core lies the Longines caliber L667, an automatic movement based on the renowned ETA 7750, boasting 25 jewels and a power reserve of 42 hours. This marvel of engineering ensures precision timekeeping and reliability, making it suitable for both casual wear and formal occasions. The watch's durable materials and water resistance rating of 50 meters make it perfect for everyday use, while its comfortable fit and secure stainless steel bracelet ensure an all-day wear experience.

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Key Features

Longines caliber L667 (ETA 7750 base)
Sapphire crystal glass
Stainless Steel case material
Water Resistance: 50.00 m

Specifications

Brand

Longines

Family

Conquest

Model

Conquest Chronograph

Reference

L3.678.4.56.6

Movement

l667

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph

Case

Stainless Steel 41mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

[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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Longines Conquest Chronograph $499 Shipped

Longines - L3.660.4 · $499

This Longines Conquest Chronograph features a stunning Silverish White sunburst dial with raised indices and three register chronograph subdials, housed in a robust sporty case.

Condition: Great condition
Case size: 41mm diameter
Lug to lug: 50mm
Thickness: 13mm

Posted at

May 18, 2026, 7:59 PM

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Longines Hydroconquest 39mm black bezel - 2026 release

Longines - Hydroconquest 39mm black bezel · $2,050

A 39mm black bezel Longines Hydroconquest with a black dial, sold in full kit and unregistered for warranty purposes.

Condition: Like-new
Case diameter: 39mm
Condition notes: No scratches anywhere on the case, crystal or bracelet

Posted at

May 18, 2026, 4:29 PM

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Longines Conquest V.H.P. 36mm (L3.316.4.76.6) - $450

Longines - L3.316.4.76.6 · $450

This Longines Conquest V.H.P. is a 36mm quartz watch featuring a white dial and high accuracy, rated +/- 5 seconds per year. It's officially listed as silver but appears white to the seller.

Condition: Excellent with minor daily wear
Case diameter: 36mm
Lug width: 18mm
Bracelet size: 6.75"

Posted at

May 17, 2026, 4:03 PM

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Longines Heritage Conquest - L1.611.4 - Great Condition - Box and Papers - $1,099

Longines - L1.611.4 · $1,099

This Longines Heritage Conquest features a silver dial and comes with original band, buckle, box, papers, an extra strap, and is in immaculate condition.

Condition: Excellent
Band Condition: Great
Buckle Condition: Great

Posted at

May 17, 2026, 12:54 PM

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Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550

Longines - L3.740.3.56.7 · $550

A Longines Hydroconquest quartz two-tone diver watch, featuring a black dial and 41mm case size.

Condition: Pre-owned with light scratches
Case size: 41mm
Material: two tone

Posted at

May 17, 2026, 9:13 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) $430 (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) $430 (details/description in the comments)

Longines - 4384 · $430

This vintage Swiss-made Longines 'Conquest' watch features a refined integrated steel sports design with a subtle dial shape and elegant simplicity. It houses the Longines calibre L.746.2, a beautiful early quartz movement that works well to this day.

Condition: Great condition considering age, minor general wear
Case Dimensions: 30.2mm x 37.8mm x 7.7mm
Bracelet Length Capacity: up to roughly 18cm

Posted at

May 16, 2026, 10:52 PM

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Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550

Longines - L3.740.3.56.7 · $550

This Longines Hydroconquest is a fun and capable diver that comes in the 41mm version, featuring a black dial and quartz movement.

Condition: pre-owned with light scratches
Case Size: 41mm
Movement Type: quartz

Posted at

May 16, 2026, 7:05 PM

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Longines Hydroconquest 39mm black bezel/dial

Longines - 39mm black bezel/black dial Hydroconquest · $2,200

This Longines Hydroconquest 39mm features a black bezel and dial, is in excellent condition, and comes with its full kit including boxes, hangtags, warranty card, and owner's manual.

Condition: Like-new
Case size: 39mm diameter
Box status: full-kit
Warranty remaining: five years

Posted at

May 16, 2026, 5:17 PM

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