Longines HydroConquest Hydroconquest Quartz 39 Blue

Reference L3.640.4.96.6

About this watch

The Longines Hydroconquest Quartz 39 Blue is a masterpiece of Swiss watchmaking, blending style, function, and heritage in a single timepiece. Its captivating blue dial, crafted from high-quality stainless steel, exudes elegance and sophistication while its rotating dive bezel adds a practical touch for timing underwater activities. The quartz movement, based on the ETA 955.412, boasts precision and reliability, ensuring you'll always be on time with a power reserve of up to 26,280 hours. With a water resistance of up to 300 meters, this watch is designed for serious aquatic adventures, whether snorkeling, swimming, or just splashing around. The stainless steel bracelet ensures durability while providing a comfortable fit, making it perfect for everyday wear. This luxury item, priced at $840, feels like a worthy investment when considering the craftsmanship, materials, and brand heritage.
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Key Features

  • 39 mm diameter stainless steel case
  • Sapphire crystal scratch resistance
  • Quartz movement with 26,280 hour power reserve
  • Rotating dive bezel for underwater activities
  • Water resistance up to 300 meters
  • Stainless steel bracelet for durability and comfort
  • Analog display with hours, minutes, seconds hands, and date function

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Quartz 39 Blue
Reference
L3.640.4.96.6
Movement
l263
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 39mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Reduced! Longines Hydroconquest 41mm ceramic, LNIB literally spotless

Reduced! Longines Hydroconquest 41mm ceramic, LNIB literally spotless

This is a 41mm Longines Hydroconquest with a blue dial and blue ceramic bezel. It has not been worn extensively and comes with the original box and papers.

  • Condition: Like new in box
  • Diameter: 41mm
  • Bezel material: blue ceramic
Posted at
Oct 18, 2025, 8:33 AM
Active
[WTS] Longines HydroConquest – Ceramic Bezel 39mm, 2029 Warranty

Longines HydroConquest – Ceramic Bezel 39mm, 2029 Warranty

A black dial Longines Hydroconquest Ceramic Bezel in 39mm size, bought new in October 2024.

  • Condition: Great condition on the case, crystal, and dial. Minor scratches from daily wear are visible on the bracelet and buckle.
  • Warranty Valid Until: October 2029
  • Size: 39mm
Posted at
Oct 16, 2025, 5:22 PM
Active
[WTS] Longines Hydroconquest 41

Longines Hydroconquest 41

Longines - L3.781.4.05.6 · $1,380
The Longines Hydroconquest 41 features a black dial and green ceramic bezel, comes with full kit, box, papers, warranty, and original purchase receipt.

  • Condition: essentially unworn
  • Shipping: CONUS only
Posted at
Oct 15, 2025, 8:12 PM
Active
[WTS] BNIB Longines HydroConquest

BNIB Longines HydroConquest

The Longines HydroConquest is a stylish and functional dive watch designed for everyday wear. It features a stainless steel case with a sleek design and a water-resistant construction.

  • Condition: Brand new in box (BNIB)
Posted at
Oct 15, 2025, 7:10 PM
Active
Longines HydroConquest, L3.781.4.06.9, Steel Diver, Olive, Excellent Condition.

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
Active