Longines Conquest Conquest Quartz 34 Stainless Steel - Diamond / Black

Reference L3.400.0.57.6

Longines Conquest Quartz 34 Stainless Steel - Diamond / Black

About this watch

The Longines Conquest L3.400.0.57.6 is a luxurious quartz watch that exudes elegance and sophistication. Its 34mm round case, made from durable stainless steel, features a stunning black dial and gem-set bezel with diamond accents. The watch is protected by sapphire glass and has an impressive water resistance of 300 meters, making it perfect for active lifestyles. With its reliable quartz movement, this watch promises exceptional accuracy and requires minimal maintenance. Its sleek design, robust materials, and precise timekeeping make the Longines Conquest L3.400.0.57.6 a remarkable luxury timepiece that deserves a spot on your wrist.
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Key Features

  • 34mm round stainless steel case
  • Stunning black dial with gem-set bezel and diamond accents
  • Sapphire glass protection for scratch resistance
  • 300m water resistance for active lifestyles
  • Reliable quartz movement for exceptional accuracy
  • Durable stainless steel bracelet for comfort and longevity

Specifications

Brand
Longines
Family
Conquest
Model
Conquest Quartz 34 Stainless Steel - Diamond / Black
Reference
L3.400.0.57.6
Case
Stainless Steel 34mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Conquest Chronograph 42mm – Blue Ceramic Bezel – Ref. L3.835.4.98 – Full Kit

Longines Conquest Chronograph 42mm – Blue Ceramic Bezel – Ref. L3.835.4.98 – Full Kit

Longines - L3.835.4.98 · $2,499
This Longines Conquest Chronograph features a blue ceramic bezel and measures 42mm in diameter.

  • Condition: Excellent condition
  • Case Size: 42mm diameter
  • Box: yes
  • Instruction Manual: yes
Posted at
Apr 26, 2026, 6:35 PM
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[WTS] PRICED TO FLY Longines Conquest 🏞️ ‘Sunray Green’ L3.830.4.02.6 JUST $1350 Shipped

PRICED TO FLY Longines Conquest 🏞️ ‘Sunray Green’ L3.830.4.02.6 JUST $1350 Shipped

Longines - L3.830.4.02.6 · $1,350
This is a super clean, modern everyday watch with Longines' great build quality, gorgeous sunray green dial, and a really versatile look on bracelet.

  • Condition: like-new with minor scratches
  • Case size: 41mm
  • Bracelet type: bracelet
  • Year sold: 2025
Posted at
Apr 25, 2026, 2:30 PM
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[WTS] Longines Conquest 39 mm $600 and Longines HydroConquest 39 mm $700

Longines Conquest 39 mm $600 and Longines HydroConquest 39 mm $700

Longines - L3.776.4, L3.741.4 · $600
Two Longines watches for sale, the Conquest L3.776.4 and the HydroConquest L3.741.4.

  • Condition: Very good
  • Case size: 39 mm
  • Year purchased: 2025
  • Clasp wear: minor wear on clasp from being stored at work desk
Posted at
Apr 25, 2026, 1:54 PM
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[WTS] Longines HydroConquest 41 – $975

Longines HydroConquest 41 – $975

Longines - HydroConquest 41 · $975
This Longines HydroConquest 41 features a 41mm case, minimal wear, and comes with its box, papers, hangtag, and warranty card.

  • Condition: Very Good Pre-owned Condition
  • Case Size: 41mm diameter
  • Bracelet Condition: hairlines throughout polished surfaces, some desk wear
Posted at
Apr 25, 2026, 10:32 AM
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[WTS] Brand New Longines Hydroconquest Exclusive- 42mm- L3.788.4.98.6

Brand New Longines Hydroconquest Exclusive- 42mm- L3.788.4.98.6

Longines - L3.788.4.98.6 · $2,200
The Longines Hydroconquest Exclusive features a 42mm case with a beautiful frosted blue dial and comes in brand new condition.

  • Condition: Brand new, unworn
  • Case size: 42mm
Posted at
Apr 24, 2026, 6:24 PM
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[WTS] Longines Conquest L3.835.4.72.6

Longines Conquest L3.835.4.72.6

Longines - L3.835.4.72.6 · $2,250
A Longines Conquest with a panda dial is for sale in excellent condition, with minimal signs of wear and comes with the complete set.

  • Condition: Excellent condition, almost no signs of wear
  • Payment Methods Accepted: multiple payment methods including crypto, but not PayPal
  • Additional Features: comes with the complete set
  • Meets Requirements: true
Posted at
Apr 24, 2026, 1:34 PM
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[WTS] 2025 Longines Conquest ‘Sunray Green’ 41mm L3.830.4.02.6 $1400 Shipped

2025 Longines Conquest ‘Sunray Green’ 41mm L3.830.4.02.6 $1400 Shipped

Longines - L3.830.4.02.6 · $1,400
This is a super clean, modern everyday watch with Longines' great build quality, gorgeous sunray green dial, and a really versatile look on bracelet.

  • Condition: basically new, minor scratches
  • Case size: 41mm diameter
  • Bracelet type: bracelet
Posted at
Apr 23, 2026, 6:24 PM
Active
View listing on r/WatchExchange
[WTS] New Longines HydroConquest 42mm

New Longines HydroConquest 42mm

Longines - HydroConquest 42mm · $2,050
A new Longines HydroConquest in the 42mm size, with a mesh band and box and papers included.

  • Condition: New
  • Case Size: 42mm
  • Band Type: mesh
Posted at
Apr 23, 2026, 8:54 AM
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[WTS] Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,850

Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,850

Longines - L3.783.4 · $1,850
The Longines Hydroconquest Chronograph is a high-performance Swiss diver's watch that features a 41mm case, blue ceramic bezel, and screw-down crown. It houses the calibre L688.2, a column-wheel chronograph movement with a 54-hour power reserve.

  • Condition: Very good with minor usage marks
  • Case Size: 41 x 51mm stainless steel case with a thickness of 15.6mm and a lug width of 21mm
  • Movement: Longines L688.2, automatic column wheel chronograph with 27 jewels, 28,800 bph, and a 54-hour power reserve
  • Water Resistance: 300 (30 ATM)
Posted at
Apr 22, 2026, 3:35 PM
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