Longines HydroConquest Hydroconquest Quartz 39 Green

Reference L3.640.4.06.6

About this watch

When it comes to watches, few names resonate like Longines. The Hydroconquest Quartz 39 Green embodies the spirit of adventure while ensuring functionality. This timepiece beautifully balances style, functionality, and durability. It stands out in the crowded field of dive watches and offers an impressive array of features that cater to both adventure seekers and everyday wearers alike. The stunning green sunburst dial is not only striking but also versatile enough to pair with various outfits. The combination of the green dial with the stainless steel case creates a beautiful contrast that is both eye-catching and elegant. At the heart of the Hydroconquest Quartz 39 Green is the Longines Caliber L263, a quartz movement based on the reliable ETA 955.412. This means you can expect not just accuracy but also a long lifespan from this timepiece. With a water resistance rating of up to 300 meters, the Hydroconquest is more than ready for aquatic adventures. The rotating bezel smoothly rotates with a reassuring click, ensuring accurate timing for your underwater adventures.
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Key Features

  • Longines Caliber L263 Quartz Movement
  • Sapphire Glass for Scratch Resistance and Clarity
  • Rotating 0-60 Bezel for Accurate Dive Timekeeping
  • 300m Water Resistance for Aquatic Adventures
  • Stainless Steel Case with Robust Construction
  • Green Sunburst Dial for Versatile Styling Options
  • Proprietary Hands and Stick/Dot Indexes

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Quartz 39 Green
Reference
L3.640.4.06.6
Movement
l263
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 39mm
Dial Color
Green
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Hydroconquest Commonwealth 39mm BNIB

Longines Hydroconquest Commonwealth 39mm BNIB

The Longines Hydroconquest Commonwealth is a limited edition watch from 2026, available in 39mm size. It comes with inner and outer boxes, tags, papers, and warranty.

  • Condition: Brand New In Box (BNIB)
  • Case size: 39mm
  • Limited edition: 2026
Posted at
May 12, 2026, 6:50 PM
Active
[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
Active
[WTS] Longines HydroConquest 39mm Automatic Black Ceramic Bezel + Bracelet + WOE NATO - $750

Longines HydroConquest 39mm Automatic Black Ceramic Bezel + Bracelet + WOE NATO - $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
Active
[WTS] Longines Hydroconquest Mesh Bracelet 20mm Lugs

Longines Hydroconquest Mesh Bracelet 20mm Lugs

  • Bracelet type: Mesh Bracelet
  • Lug size: 20mm
Posted at
May 12, 2026, 8:47 AM
Active
[WTS] Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 馃殺

Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 馃殺

Longines - L3.740.3.56.7 $600
A quartz-powered diver's watch from Longines, featuring a black dial and two-tone yellow gold PVD finish on the 41mm case.

  • Condition: Good (light scratches)
  • Case size: 41mm
  • Material: two tone yellow gold PVD
  • Movement: quartz
Posted at
May 10, 2026, 5:48 PM
Active
[WTS] Longines Hydroconquest 43mm (updated pictures)

Longines Hydroconquest 43mm (updated pictures)

Longines - L3.782.4.56.6 $1,260
This Longines Hydroconquest 43mm features a black dial on a stainless steel bracelet and has been worn only 4-6 times since its purchase. It comes with a full set, including the box, tags, warranty cards, and is still under Jomashop's 2-year warranty.

  • Condition: Fantastic, worn 4-6 times
  • Case size: 43mm
  • Lug to lug: 53mm
  • Thickness: 11.90mm
Posted at
May 9, 2026, 4:10 PM
Active
[WTS] (brand new) Longines HydroConquest 39mm - $1800 shipped

(brand new) Longines HydroConquest 39mm - $1800 shipped

Longines - HydroConquest $1,800
This brand new Longines HydroConquest features a black dial, stainless steel case and bracelet, sapphire crystal with anti-reflective coating, and is powered by the L888.4 automatic movement.

  • Condition: Unworn
  • Case material: stainless steel
  • Bracelet material: stainless steel
  • Water resistance: 300m
Posted at
May 9, 2026, 1:11 PM
Active
[WTS] 2026 Longines HydroConquest 39mm - Black Ceramic - Newest Release - Full Set

2026 Longines HydroConquest 39mm - Black Ceramic - Newest Release - Full Set

Longines - L3.779.4.56.6 $1,900
The newly redesigned Longines HydroConquest in the highly sought-after 39mm size, featuring a refined dial and upgraded bracelet.

  • Condition: Excellent Used Condition
  • Size: 39mm diameter
  • Thickness: ~11.9mm
  • Lug-to-lug length: 47mm
Posted at
May 7, 2026, 8:43 PM
Active
[WTS] Longines Hydroconquest 43mm L3.782.4.56.6-3 weeks owned.

Longines Hydroconquest 43mm L3.782.4.56.6-3 weeks owned.

Longines - L3.782.4.56.6 $1,350
A Longines Hydroconquest 43mm watch on a black dial with a stainless steel bracelet, now on an Ali Rubber strap.

  • Condition: Mint condition, worn approximately 5 times
  • Case size: 43mm diameter
  • Lug to lug: 53mm
  • Thickness: 11.90mm
Posted at
May 7, 2026, 4:43 AM
Active