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Longines HydroConquest Automatic 39 mm, reference L3.779.4.56.6, photo 1
Longines

Longines HydroConquest Automatic 39 mm Reference L3.779.4.56.6

Black dial · Steel bracelet · 39 mm

Item WFT3E8SQ9

NewOriginal papersOriginal box

Condition

New
Brand new and never worn, as supplied.
Unworn
Never worn. It may have been stored or displayed, but shows no signs of use.
Very good
Lightly worn with at most very faint signs of use; close to new.
Good
Worn, with visible but normal signs of use for its age.

Manufacturer price $2,445

$1,670
  • Card, Apple Pay or Google Pay on Stripe’s secure checkout, no card feePayPal, or a card through PayPal, on PayPal’s secure checkout, no feeWe confirm the watch is available, then send you the payment details · How to pay

In stock · processing at least 24 hours · free US delivery in 1–3 business days

To the FedEx location nearest you, collected with photo ID: the watch never waits on a doorstep.

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Case
39 mm · Stainless Steel/Ceramic
Movement
Automatic · L888.5
Dial
Black
Water resistance
300 m

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What’s included

  • Original box
  • Original papers
  • 24-month Watchflix NYC warranty
  • Secure checkout by Stripe: Visa, Mastercard, American Express, Apple Pay, Google Pay. We never see your card details.
  • Secure checkout by PayPal: your PayPal account or a card. We never see your payment details.
  • Authenticated by the Watchflix NYC specialist before it ships · How we check
  • Free, fully insured US delivery to the FedEx location nearest you in 1–3 business days. You collect it with a photo ID matching the order, so the watch never waits on a doorstep. · Shipping
  • Outside the United States? Message us on WhatsApp first and we confirm delivery to your country, the cost and the time. Import duties and taxes are charged by your country's customs when the watch arrives. They are not included in our prices and are paid by the buyer.
  • 14-day returns, with no restocking fee · Refund policy
  • Watchflix LA · 5.0 on Google from 480 reviews · Read reviews
  • Want to see this exact watch? Ask us on WhatsApp for live photos before you buy. · Ask for photos

Specifications

Overview

Brand
Longines
Reference
L3.779.4.56.6
Condition
New
Made for
Men's
Original box
Yes
Original papers
Yes

Case and dial

Material
Stainless Steel/Ceramic
Diameter
39 mm
Dial
Black
Crystal
Sapphire Crystal
Water resistance
300 m

Movement

Movement
Automatic
Caliber
L888.5
Power reserve
72 h
Frequency
25,200 vibrations per hour
Functions
Center Seconds, Date

Bracelet

Bracelet or strap
Stainless Steel
Clasp
Double Folding Clasp
Clasp material
Stainless Steel

Features

Additional features
Screw-Down Crown, Rotating Bezel, Luminous Indices, Luminous Hands, New 2026

Movement: Longines calibre L888.5, with 61 watches in stock.

New to Longines? Read our Longines buying guide

Description

The Longines HydroConquest Automatic 39 mm (reference L3.779.4.56.6) is a 39 mm stainless steel/ceramic watch with a black dial on a stainless steel bracelet.

It is listed at $1,670 at Watchflix NYC, in stock in the US.

It is powered by an automatic movement, caliber L888.5, with 72 hours of power reserve. Functions: center seconds and date. Details: screw-down crown, rotating bezel, luminous indices, luminous hands and new 2026. Water resistant to 300 m.

Condition: new. Supplied with the original box and papers.

Checked by our specialist before it ships, and delivered fully insured.

About the Longines HydroConquest

The HydroConquest is Longines' dive watch line, with a unidirectional rotating bezel and water resistance of 300 meters.

Check the bezel's action and insert, and whether the watch comes on a bracelet or a rubber strap.

We stock 215 Longines HydroConquest watches, from $860 to $3,225.

Guides for this HydroConquest

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