Longines HydroConquest Hydroconquest 39 Quartz Silver

Reference L3.647.4.76.6

About this watch

The Longines Hydroconquest 39 Quartz Silver is a head-turning timepiece that perfectly blends style with functionality. This Swiss-made watch is designed for both underwater adventures and everyday wear, thanks to its sleek design and high-performance features. The silver dial is elegantly complemented by stick and dot indexes, giving it a modern yet timeless look. The 39mm round case is made from durable stainless steel, which adds to its sturdiness while enhancing its aesthetic appeal. The watch is equipped with sapphire glass, known for its excellent scratch resistance, ensuring your watch remains clear and pristine even after years of wear. At the heart of the Hydroconquest 39 is the Longines caliber L263 quartz movement, based on the reliable ETA 955.412, renowned for its precision and longevity. This quartz movement offers several benefits over its mechanical counterparts, including accuracy and reduced maintenance. The watch features hours, minutes, seconds, and a date function, making it a practical choice for daily use. With a water resistance of 300 meters, you can take this watch diving without worrying about its performance under pressure. The rotating bezel allows for precise timing, a crucial feature for underwater adventures. Whether you're checking the tide times or keeping track of appointments, this watch has you covered. Comfort is key when it comes to any watch, and the Hydroconquest does not disappoint, featuring a snug fit that feels secure without being overly tight. The stainless steel bracelet is designed for comfort and durability, ensuring it feels good on your wrist throughout the day. One of the best aspects of this watch is its versatility, adapting seamlessly from casual to formal settings.
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Key Features

  • 39mm round case made from durable stainless steel
  • Sapphire glass with excellent scratch resistance
  • Longines caliber L263 quartz movement for accuracy and longevity
  • 300m water resistance for diving and underwater adventures
  • Rotating bezel for precise timing
  • Stainless steel bracelet for comfort and durability

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest 39 Quartz Silver
Reference
L3.647.4.76.6
Movement
l263
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 39mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Hydroconquest 39mm Black MINT

Longines Hydroconquest 39mm Black MINT

A Longines Hydroconquest 39mm in black, described as 'SUPER SUPER SUPER watch' with a comfortable bracelet and excellent bezel action.

  • Condition: MINT, basically new
  • Bracelet length: Super comfortable
  • Bezel action: Great
Posted at
Apr 28, 2026, 9:37 PM
Active
[WTS] Longines HydroConquest Green Dial Two Tone $1350 41mm

Longines HydroConquest Green Dial Two Tone $1350 41mm

Longines - HydroConquest · $1,350
This Longines HydroConquest features a green dial and two-tone design.

Posted at
Apr 28, 2026, 9:41 AM
Active
[WTS] Longines HydroConquest 43mm

Longines HydroConquest 43mm

A Longines HydroConquest 43mm diver watch for sale, with excellent timekeeping and minimal signs of wear.

  • Condition: Pre-owned with normal wear
  • Bracelet condition: normal wear with worn clasp
  • Case condition: scratch-free except on the back
  • Papers included: true
Posted at
Apr 27, 2026, 9:05 PM
Active
[WTS] Longines HydroConquest 42mm Blue Ceramic Bezel – 2026 Card – Full Kit – Like New

Longines HydroConquest 42mm Blue Ceramic Bezel – 2026 Card – Full Kit – Like New

Longines - 2026 · $4,200
The listing is for a Longines HydroConquest 42mm watch with a blue ceramic bezel, accompanied by a full kit and a 2026 card.

  • Condition: Like new
  • Material: Blue Ceramic Bezel
  • Size: 42mm
Posted at
Apr 27, 2026, 1:18 PM
Active
[WTS] Longines HydroConquest 39mm 2026 Commonwealth Games Limited Edition

Longines HydroConquest 39mm 2026 Commonwealth Games Limited Edition

This is a brand new, unworn Longines HydroConquest limited edition watch from the 2026 Commonwealth Games collection. It features a 39mm case and comes with various accessories.

  • Condition: Brand New Unworn
  • Case size: 39mm
  • Limited edition status: One of 2026
Posted at
Apr 27, 2026, 11:58 AM
Active
[WTS] Longines Hydroconquest 41mm ceramic Ref. L3.781.4.56.6

Longines Hydroconquest 41mm ceramic Ref. L3.781.4.56.6

This Longines Hydroconquest features a 41mm ceramic case, black dial, and is sized for an approximate 7.4" wrist.

  • Condition: Pre-owned with scratches on the case and bracelet
  • Case material: ceramic
  • Bracelet size: 7.4in diameter
  • Warranty: no warranty included
Posted at
Apr 26, 2026, 7:58 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

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

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
Active
[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
Active