Longines HydroConquest Hydroconquest Quartz 39 Black

Reference L3.688.4.53.6

About this watch

The Longines Hydroconquest Quartz 39 Black is a remarkable timepiece that offers a blend of style, functionality, and durability. With its bold design and sophisticated features, it’s hard not to fall in love with this watch. Whether you're diving into adventures or simply enjoying a night out, the Hydroconquest is ready to accompany you every step of the way. Its stainless steel case and sapphire glass ensure reliability and water resistance up to 30 meters, making it perfect for casual beach outings or unexpected rain showers. The rotating bezel allows for easy tracking of immersion times, while the proprietary hands are luminous, ensuring readability even in low-light conditions. With its robust features, stylish design, and reliable performance, this watch is a testament to the craftsmanship and heritage of the Longines brand.

Buy Now on Jomashop

This is an affiliate link

Key Features

Quartz movement based on ETA 955.412
30 meters water resistance
Rotating bezel with 0-60 markings
Sapphire glass crystal
Stainless steel case and bracelet
Proprietary luminous hands
Date function and analog display

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydroconquest Quartz 39 Black

Reference

L3.688.4.53.6

Movement

l263

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 39mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

Longines Hydroconquest 43mm - $950

Longines - Hydroconquest 43mm · $950

This Longines HydroConquest 43mm is in excellent working order and comes with a WatchMaxx full kit.

Condition: Great condition
Depth rating: 200m

Posted at

Aug 21, 2025, 12:02 AM

Active

View listing on r/WatchExchange

Longines HydroConquest Ref. L3.780.3 – Two-Tone Steel & Rose Gold PVD – 39mm Automatic Diver – $999 Shipped

Longines - L3.780.3 · $999

a Longines HydroConquest Ref. L3.780.3, a Two-Tone Steel & Rose Gold PVD automatic diver watch with a 39mm case size.

Case Material: steel and rose gold PVD
Water Resistance: 39mm diameter

Posted at

Aug 18, 2025, 9:52 PM

Active

View listing on r/WatchExchange

Longines Hydroconquest Automatic 41MM - Green Ceramic Bezel

Longines - L3.781.4.05.2 · $1,240

This Longines HydroConquest features a green ceramic bezel, automatic movement with date display, and a power reserve of up to 72 hours.

Condition: Like new/never worn
Case size: 41mm diameter
Water resistance: 30 bar
Crystal material: scratch-resistant sapphire crystal

Posted at

Aug 18, 2025, 7:39 PM

Active

View listing on r/WatchExchange

For Sale – Longines HydroConquest Automatic (Ref. L3.649.4, Navy Dial) – €600 ONO Automatic 41mm with the navy blue dial.

Posted at

Aug 16, 2025, 7:17 AM

Active

View listing on r/WatchExchange

Longines Hydroconquest Quartz 39mm - Very good condition - $500 shipped in US

Posted at

Aug 14, 2025, 7:47 PM

Active

View listing on r/WatchExchange

Longines Hydroconquest GMT Black 41mm - Full set with extras $1850

Longines - Hydroconquest GMT Black 41mm · $1,850

41mm Longines Hydroconquest GMT with full set of extras, including OEM rubber strap and two additional straps.

Condition: Excellent
Case size: 41mm
Included extras: Longines black rubber strap, Longines style leather strap, orange cut-to-size strap

Posted at

Aug 11, 2025, 4:30 PM

Active

View listing on r/WatchExchange

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

View listing on RolexForums