Longines HydroConquest Hydroconquest Quartz 39 Blue

Reference L3.640.4.96.6

About this watch

The Longines Hydroconquest Quartz 39 Blue is a masterpiece of Swiss watchmaking, blending style, function, and heritage in a single timepiece. Its captivating blue dial, crafted from high-quality stainless steel, exudes elegance and sophistication while its rotating dive bezel adds a practical touch for timing underwater activities. The quartz movement, based on the ETA 955.412, boasts precision and reliability, ensuring you'll always be on time with a power reserve of up to 26,280 hours. With a water resistance of up to 300 meters, this watch is designed for serious aquatic adventures, whether snorkeling, swimming, or just splashing around. The stainless steel bracelet ensures durability while providing a comfortable fit, making it perfect for everyday wear. This luxury item, priced at $840, feels like a worthy investment when considering the craftsmanship, materials, and brand heritage.

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Key Features

39 mm diameter stainless steel case
Sapphire crystal scratch resistance
Quartz movement with 26,280 hour power reserve
Rotating dive bezel for underwater activities
Water resistance up to 300 meters
Stainless steel bracelet for durability and comfort
Analog display with hours, minutes, seconds hands, and date function

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydroconquest Quartz 39 Blue

Reference

L3.640.4.96.6

Movement

l263

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 39mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

(Longines) (2026 Hydroconquest 42) Full 5 Year Warranty, LNIB

Longines - Hydroconquest 42 · $2,200

This newly released Longines Hydroconquest is a large watch with exceptional fit and finish. It comes in its original packaging with a full kit and warranty.

Condition: LNIB (Like New In Box)
Case size: 42mm
Water resistance: not specified

Posted at

Apr 13, 2026, 2:48 PM

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Longines Hydroconquest 43mm Full Black Ceramic Ref L3.784.4.56.9 MINT Full Kit $2500

Longines - L3.784.4.56.9 · $2,500

This Longines HydroConquest features a unique full black ceramic aesthetic with a sleek and stealthy design, while maintaining refined and versatile qualities. The watch boasts excellent scratch resistance, legible dial, and comfortable daily wear.

Condition: MINT
Case diameter: 43mm
Thickness: 13mm
Lug-to-lug length: 56mm

Posted at

Apr 10, 2026, 8:26 PM

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Longines Hydroconquest GMT | 41mm | Sunburst Brown | Excellent Condition

Longines - Hydroconquest GMT · $1,350

This Longines Hydroconquest GMT is a refresh of the well-loved hydroconquest line range, featuring a new quick-adjust bracelet and updated bezel with brown ceramic insert. The sunray dial looks incredible in all lighting conditions, especially when exposed to sunlight.

Condition: Excellent
Case size: 41mm diameter
Lug to lug: 49.2mm
Thickness: 12.8mm

Posted at

Apr 8, 2026, 5:34 PM

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Longines HydroConquest 2 tone Green Dial 2024 $1320

Longines - HydroConquest 2 tone Green Dial 2024 · $1,320

Image: https://imgur.com/a/bPjxHRP

Posted at

Apr 7, 2026, 9:36 AM

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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

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