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

Longines Hydroconquest 43mm L3.782.4.56.6-3 weeks owned.

Longines - L3.782.4.56.6 · $1,350

A Longines Hydroconquest 43mm watch on a black dial with a stainless steel bracelet, now on an Ali Rubber strap.

Condition: Mint condition, worn approximately 5 times
Case size: 43mm diameter
Lug to lug: 53mm
Thickness: 11.90mm

Posted at

May 7, 2026, 4:43 AM

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Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢

Longines - L3.740.3.56.7 · $600

This Longines Hydroconquest is a 41mm two-tone diver's watch with a quartz movement.

Condition: Used with light scratches
Size: 41mm diameter

Posted at

May 6, 2026, 9:43 PM

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2025 Longines Hydroconquest 41mm Ref: L37814056

Longines - L37814056 · $1,300

This listing is for a 2025 Longines Hydroconquest 41mm watch, featuring an automatic self-winding caliber L888.5, unidirectional green ceramic bezel, and 300M water resistance.

Condition: Like new with some minor marks on the bracelet and buckle
Case size: 41mm
Bracelet type: Stainless steel
Water resistance: 300m depth rating

Posted at

May 6, 2026, 8:37 PM

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Longines Hydroconquest 42 mm “Green” 2026

Longines - Hydroconquest 42mm · $1,800

Up for sale is one of my new Longines Hydroconquest 42mm watches, I purchased several but find myself gravitating towards other models.

Condition: New
Case size: 42mm diameter

Posted at

May 6, 2026, 7:28 PM

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(Longines) (2026 Hydroconquest 39mm Commonwealth) Brand New and Unworn

Longines - L3.779.4.09.9 · $2,650

This is a Limited Edition Hydroconquest Commonwealth Games watch from Longines, purchased brand new from an authorized dealer and still under warranty.

Case diameter: 39mm
Box condition: great condition with exception of price sticker on outer box

Posted at

May 6, 2026, 5:30 PM

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Longines HydroConquest 39mm Black Dial – 2026 Model, Worn Once. $1,995

Longines - HydroConquest 2026 Model · $1,995

A Longines HydroConquest with a black dial and steel bracelet for sale. It's the latest iteration from 2026, purchased recently but only worn once to a wedding.

Condition: Near mint, worn once
Case size: 39mm
Movement: Automatic

Posted at

May 4, 2026, 12:18 PM

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New Longines HydroConquest 42mm Frosted Blue Dial

Longines - HydroConquest 42mm · $2,100

A brand new Longines HydroConquest with a frosted blue dial in 42mm size.

Condition: new
Case size: 42mm
Diameter: 42mm

Posted at

May 3, 2026, 1:20 PM

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Longines HydroConquest GMT Blue Ref: L3.790.4.96.6 (2026). New/Complete. $1,999

Longines - L3.790.4.96.6 (2026) · $1,999

The Longines HydroConquest GMT Blue is a true GMT diver with a sunray blue dial, blue ceramic bezel, and Calibre L844.5 automatic movement.

Condition: Brand New
Case diameter: 41mm
Water resistance: 300m
Movement type: Calibre L844.5 automatic

Posted at

May 1, 2026, 8:25 PM

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New Longines Hydroconquest 42mm Frosted Blue Dial

Longines - Hydroconquest 42mm · $2,200

A brand new Longines Hydroconquest 42mm with a frosted blue dial, sold exclusively at Corporate boutiques. The watch comes with all links, papers, and box.

Condition: Brand new
Diameter: 42mm

Posted at

May 1, 2026, 10:36 AM

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