Longines HydroConquest Hydroconquest Quartz 39 Black / Red

Reference L3.688.4.59.6

About this watch

Welcome to our comprehensive review of the Longines Hydroconquest Quartz 39 Black / Red, model L3.688.4.59.6! This timepiece embodies luxury, precision, and adventure. With a rich history dating back to 1832, Longines has crafted a name synonymous with elegance and functionality. The Hydroconquest family personifies this ethos, featuring a bold design, scratch-resistant sapphire crystal glass, and an impressive water resistance of 300 meters. This quartz movement watch is highly reliable, offering precision that mechanical movements can only aspire to achieve. With a power reserve of approximately 26,280 seconds, you can expect it to keep ticking for a long time without the need for frequent adjustments. The rotating bezel allows easy tracking of dive time, while the date function adds practicality to its impressive design. Whether you're a seasoned diver or a casual watch enthusiast, this timepiece deserves a place in your collection.
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Key Features

  • Quartz movement with 26,280-second power reserve
  • 300-meter water resistance for diving and swimming
  • Scratch-resistant sapphire crystal glass for protection
  • Rotating bezel for easy dive time tracking
  • Date function for added practicality

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Quartz 39 Black / Red
Reference
L3.688.4.59.6
Movement
l263
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 39mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Hydroconquest GMT 43mm Olive Dial Ref L3.890.4.06.6 Full Kit $1650 net to me FIRM

Longines Hydroconquest GMT 43mm Olive Dial Ref L3.890.4.06.6 Full Kit $1650 net to me FIRM

Longines - L3.890.4.06.6 · $1,650
A lightly used Longines Hydroconquest GMT with a striking sun ray olive dial and ceramic bezel, perfect for both toughness and style.

  • Condition: Excellent, minor marks on clasp
  • Case Size: 43mm
  • Lug To Lug: 52mm
  • Thickness: 12.9mm
Posted at
Sep 5, 2025, 7:46 PM
Active
[WTS] Longines Hydroconquest 41mm LNIB

Longines Hydroconquest 41mm LNIB

41mm Longines Hydroconquest for sale in excellent condition, comes with a full set.

  • Condition: Like New In Box (LNIB)
  • Shipped: true
Posted at
Sep 5, 2025, 11:51 AM
Active
[WTS] Longines HydroConquest Steel 44 Black Dial (Full-Set/Unpolished)

Longines HydroConquest Steel 44 Black Dial (Full-Set/Unpolished)

A full steel diver's watch presented in outstanding condition, complete with its original box and papers.

  • Condition: Full-set/unpolished, never polished, excellent condition
  • Case size: 44mm diameter
  • Bracelet size: 8.5” / 21cm
  • Depth rating: no mention of depth rating
Posted at
Sep 4, 2025, 1:31 PM
Active
[WTS] Longines Hydroconquest Green 41mm

Longines Hydroconquest Green 41mm

A 41mm Hydroconquest Green, a sporty yet elegant watch from Longines, featuring a rubber strap and a durable design.

  • Condition: Pre-owned with scuffs on clasp and lugs
  • Size: 41mm diameter
  • Strap Size Fit: 7.25 inches and smaller
  • Retail Price: 1775
Posted at
Sep 2, 2025, 9:13 AM
Active
[WTS] Longines Hydroconquest GMT 43mm Olive Dial Ref L3.890.4.06.6 Full Kit $1700 net to me

Longines Hydroconquest GMT 43mm Olive Dial Ref L3.890.4.06.6 Full Kit $1700 net to me

Longines - L3.890.4.06.6 · $1,700
The Longines Hydroconquest GMT is a serious dive watch with a striking sun ray olive dial and ceramic bezel, featuring a 43mm case, 300m water resistance, and L844 Caliber.

  • Condition: Excellent with small marks on the clasp
  • Case size: 43mm diameter
  • Water resistance: 300m depth rating
  • Thickness: 12.9mm
Posted at
Aug 30, 2025, 11:02 AM
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