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

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

Longines - L3.788.4.06.6 · $1,999
This is the first real redesign the HydroConquest has seen in nearly a decade with thinner case and upgraded ceramic bezel with audible click.

  • Condition: Never sized, never worn
  • Movement: Calibre L888.5, automatic, silicon balance spring, 72hr power reserve
  • Water resistance: 300m / 30 bar
  • Box papers: Full double-box set with instruction manual and tags present
Posted at
May 16, 2026, 10:58 AM
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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 · $2,175
This Longines Conquest features a panda dial and is available for sale in excellent condition, with almost no signs of wear.

  • Condition: Excellent condition
  • Payment Methods: Crypto, other methods accepted (fee applies)
  • Location: Southwest FL
  • Trades Accepted: Tudor, Cartier, Rolex, Omega, Breitling, AP
Posted at
May 15, 2026, 2:33 PM
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[WTS] Longines Hydroconquest 41mm Black dial

Longines Hydroconquest 41mm Black dial

Longines - L3.781.4.56 · $1,100
A Longines Hydroconquest 41mm with a black dial is being sold. The watch features an original box and bracelet, as well as two additional straps.

  • Condition: Very good condition, a few scuffs on the sapphire but no scratches
  • Case size: 41mm
  • Bracelets: 2
  • Straps: 2
Posted at
May 15, 2026, 2:06 PM
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[WTS] Longines Hydroconquest 39mm L3.779.4.96.6

Longines Hydroconquest 39mm L3.779.4.96.6

Longines - L3.779.4.96.6 · $2,100
A Longines Hydroconquest 39mm with a frosted blue dial, this watch features a unique and stylish design.

  • Condition: Like new
  • Size: 39mm diameter
Posted at
May 14, 2026, 10:43 PM
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[WTS] Longines Hydroconquest 39mm

Longines Hydroconquest 39mm

Longines - HydroConquest 39mm · $2,000
A Longines Hydroconquest diver's watch in excellent condition, featuring a 2026 movement and virtually no signs of wear.

  • Condition: 9.6/10 - extremely clean example
  • Movement: 2026
  • Case condition: virtually no signs of wear
  • Box included: true
Posted at
May 14, 2026, 10:36 PM
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[WTS] Longines Conquest Chronograph 42mm – Blue Ceramic Bezel – Ref. L3.835.4.98 – Full Kit - repost

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

Longines - L3.835.4.98 · $2,450
This Longines Conquest Chronograph features a 42mm case size and blue ceramic bezel, making it a stylish and functional timepiece.

  • Condition: Excellent
  • Case Size: 42mm
Posted at
May 14, 2026, 8:54 PM
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[WTS] Longines Hydroconquest 39mm Limited Edition Commonwealth Games Mint

Longines Hydroconquest 39mm Limited Edition Commonwealth Games Mint

Longines - L3.779.4.09.9 · $2,950
A limited edition Longines Hydroconquest, purchased just a week ago and still under warranty.

  • Condition: Mint
  • Case Size: 39mm
  • Limited Edition Quantity: 2026 pieces
  • Warranty Length: five years
Posted at
May 12, 2026, 4:37 PM
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[WTS] Longines HydroConquest 39mm Automatic Black Ceramic Bezel + Bracelet + WOE NATO - $750

Longines HydroConquest 39mm Automatic Black Ceramic Bezel + Bracelet + WOE NATO - $750

Longines - HydroConquest 39mm · $750
This Longines HydroConquest is an excellent daily-wear diver with great proportions and comfortable sizing, featuring a black dial and ceramic bezel. The watch is running well and keeping great time.

  • Condition: Excellent daily-wear, shows wear from use on the bracelet
  • Case Size: 39mm diameter
  • Bracelet Type: black ceramic bezel + bracelet + WOE NATO
Posted at
May 12, 2026, 4:18 PM
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[WTS] Longines Conquest L3.720.4.02 — 38mm — Box and Papers — $1,499 Shipped 🔥

Longines Conquest L3.720.4.02 — 38mm — Box and Papers — $1,499 Shipped 🔥

Longines - L3.720.4.02 · $1,499
A clean and versatile Longines Conquest in the desirable 38mm case size with excellent everyday sports watch features and strong wrist presence.

  • Condition: Good overall, light hairlines on bezel, case, and bracelet
  • Case Size: 38mm
  • Wrist Fit: ~8"
Posted at
May 11, 2026, 9:36 PM
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