Longines HydroConquest Hydroconquest 39 Quartz Blue

Reference L3.647.4.96.6

About this watch

The Longines Hydroconquest 39 Quartz Blue is an exceptional timepiece that embodies the spirit of adventure. Its striking blue dial and stainless steel case make it a perfect blend of elegance and functionality. The watch features a clean, analog display with luminous hands, ensuring easy readability even in low-light conditions. With a water resistance of up to 300 meters, this watch is built for action, encouraging you to explore the world beneath the waves or on land. Its reliable quartz movement, based on the ETA 955.412, provides hassle-free timekeeping and a power reserve of over 26,000 hours. The Hydroconquest's robust design and high-quality craftsmanship make it an excellent addition to any watch collection. Whether you're a seasoned diver or someone who appreciates high-quality timepieces, this watch is sure to impress.

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Key Features

Quartz Movement with Power Reserve of over 26,000 hours
Water Resistance up to 300 meters
Stainless Steel Case with Rotating Dive Bezel

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydroconquest 39 Quartz Blue

Reference

L3.647.4.96.6

Movement

l263

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 39mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines - HydroConquest

Longines - L3.841.4.96.6 · $1,799

This Longines HydroConquest comes with both boxes and various accessories, featuring a 44mm case size.

Case size: 44mm diameter
Bracelet size fits: 8 inch wrist
Comes with: both boxes, hangtags, booklet, extra link

Posted at

Feb 24, 2026, 9:11 PM

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Longines HydroConquest GMT 41mm L3.790.4

Longines - L3.790.4 · $1,799

This Longines HydroConquest GMT is a 41mm watch featuring a 6.5 inch bracelet and an aftermarket rubber strap with deployant.

Bracelet Length: 6.5 inches
Case Size: 41mm

Posted at

Feb 19, 2026, 5:35 PM

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Longines HydroConquest 43mm Automatic – Black Dial – Full Kit – $1,095

Longines - L3.782.4 · $1,095

This Longines HydroConquest automatic watch features a black dial and 43mm case size, which provides a strong wrist presence.

Condition: very good
Case size: 43mm diameter
Case wear: normal wear consistent with careful use

Posted at

Feb 18, 2026, 4:40 PM

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Longines Hydroconquest 41m Green full kit with OEM bracelet and rubber strap

Longines - Hydroconquest 41m · $975

A green ceramic automatic watch from Longines, part of the Hydroconquest series, featuring a Swiss movement with 72-hour power reserve.

Condition: Used with signs of wear
Case diameter: 41 mm
Water resistance: 300m / 30 bar
Movement: Longines Calibre L888 series with 72hr power reserve

Posted at

Feb 16, 2026, 4:12 PM

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Longines Hydroconquest 41mm Blue - $850

Longines - L37424966 · $850

A Longines Hydroconquest 41mm automatic diver features a blue sunburst dial, matching blue ceramic bezel and has excellent timekeeping capabilities.

Condition: Excellent with light signs of wear
Case size: 41mm diameter
Bezel material: Ceramic
Bracelet condition: Light scuffs on the clasp

Posted at

Feb 11, 2026, 1:00 PM

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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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