Longines HydroConquest Hydroconquest Chronograph Quartz

Reference L3.690.4.19.6

About this watch

Are you on the hunt for a watch that combines elegance with functionality? Look no further! The Longines Hydroconquest Chronograph Quartz (model number L3.690.4.19.6) might just be the perfect fit for you. This timepiece is a beautiful blend of style, durability, and advanced technology. Renowned for their precision, Longines watches are often seen on the wrists of athletes and adventurers alike. With the Hydroconquest series, Longines has created a line that caters to both dive enthusiasts and casual wearers seeking reliability and style. The L3.690.4.19.6 model embodies these qualities with sophistication. The design of the Longines Hydroconquest Chronograph Quartz is striking. With a round case measuring 41mm in diameter, it sits comfortably on the wrist. The white dial is complemented by bold Arabic numerals that enhance readability. Plus, the stainless steel case gives it a robust feel, while the sapphire glass ensures durability against scratches. You can think of it as a knight in shining armor—elegant yet tough! The watch boasts a rotating bezel, which is a crucial feature for divers. This 0-60 dive scale allows you to track immersion times easily. Whether you’re counting down minutes of an underwater exploration or timing a cooking session, this bezel is practical and user-friendly. The closed back adds to the watch’s sleek look while ensuring it remains waterproof up to 300 meters. With a lug width of 21mm, this watch can accommodate a variety of straps, giving you the flexibility to switch up your style. At the core of this timepiece is the Longines caliber L541, a quartz movement based on the ETA Flatline 251.262. This movement is known for its reliability and precision. You can trust that this watch will keep accurate time, whether you're in the boardroom or diving into the ocean. What sets this model apart is its chronograph functionality. You have hours, minutes, and small seconds displayed clearly, along with a date function. This makes it not just a watch, but a tool for timing events. Ever needed to measure your running time? With this chronograph, you can do just that! One of the standout features of the Hydroconquest Chronograph Quartz is its impressive water resistance of 300 meters. This means you can take it for a swim, snorkel, or even dive without a second thought. It's like having a loyal companion that’s always ready for an adventure in the water!
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Key Features

  • 41mm Round Stainless Steel Case
  • Quartz Movement with Chronograph Functionality
  • 300m Water Resistance and Rotating Bezel
  • Sapphire Glass and Arabic Numerals on White Dial
  • Proprietary Hands and Lug Width of 21mm

Specifications

Brand
Longines
Family
HydroConquest
Model
Hydroconquest Chronograph Quartz
Reference
L3.690.4.19.6
Movement
l541
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
Case
Stainless Steel 41mm
Dial Color
White
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550

Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550

This Longines Hydroconquest is a fun and capable diver that comes in the 41mm version, featuring a black dial and quartz movement.

  • Condition: pre-owned with light scratches
  • Case Size: 41mm
  • Movement Type: quartz
Posted at
May 16, 2026, 7:05 PM
Active
[WTS] Longines Hydroconquest 39mm black bezel/dial

Longines Hydroconquest 39mm black bezel/dial

This Longines Hydroconquest 39mm features a black bezel and dial, is in excellent condition, and comes with its full kit including boxes, hangtags, warranty card, and owner's manual.

  • Condition: Like-new
  • Case size: 39mm diameter
  • Box status: full-kit
  • Warranty remaining: five years
Posted at
May 16, 2026, 5:17 PM
Active
[WTS] Longines HydroConquest Two Tone Green Dial $1499

Longines HydroConquest Two Tone Green Dial $1499

Longines - HydroConquest · $1,499
Longines HydroConquest Two Tone Green Dial for sale

Posted at
May 16, 2026, 11:33 AM
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[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 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

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 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

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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