Longines HydroConquest 39mm with black dial on a stainless steel mesh bracelet.
Angled view of Longines HydroConquest 39mm with black dial on a stainless steel mesh bracelet.
HydroConquest 39mm watch with black dial on stainless steel mesh bracelet
HydroConquest 39mm black dial on mesh bracelet viewed at an angle
HydroConquest 39mm watch with glowing green markers on a mesh bracelet
Back of HydroConquest 39mm stainless steel watch with globe emblem and mesh bracelet
Close-up of the HydroConquest case back showing globe emblem and Longines engraving
Mesh bracelet clasp with Longines logo on brushed steel

Authorized Dealer. Longines official 5 year warranty included

Longines

HydroConquest 39mm - Black on Mesh Bracelet

$2,400
Longines
$2,400

HydroConquest 39mm - Black on Mesh Bracelet

The Details

  • 39 mm

    Case Size

  • 11.7 mm

    Case Height

  • 48.1 mm

    Lug to Lug

  • 300m

    Water Resistance

Overview

Case Height

11.7 mm

Case Size

39 mm

Collection

Conquest

Style

Diver

Lug to Lug

48.1 mm

Lug Width

20 mm

Movement

Automatic

Reference

L3.779.4.70.6

Release Date

2026-03-26

Subcollection

HydroConquest

Water Resistance

300m

Case

Bezel

Black, unidirectional rotating bezel, count up scale, featuring a SuperLumiNova® filled capsule on the triangle at time “0”

Caseback

Brushed screw-down case back, with planisphere and Longines logo engraving

Case Material

stainless steel

Clasp / Buckle

Double-folding safety clasp, push-piece opening mechanism; micro-adjustment

Crown

Screw-in crown

Crystal

Sapphire crystal with multi-layer anti-reflective coating on both sides

Dial Color

Black

Dial Features

Lacquered polished, 11 applied rhodium-plated indexes with Super-LumiNova® treatment, date aperture at 3 o’clock

Hands

Rhodium-plated and polished, with Super-LumiNova® treatment

Lume

Super-LumiNova® treatment on hands and indexes

Strap / Bracelet Material

stainless steel Milanese mesh bracelet

Movement

Caliber

L888.5

Features

Resistant to magnetic fields (ISO 764), with silicon balance-spring, 111⁄2 lines

Functions

Hours, minutes, seconds, date

Jewels

21 Jewels

Movement

Self-winding mechanical movement

Power Reserve

72 Hours

Vibrations Per Hour

25,200 vph

Complication

Date

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About Longines

Elegance Is An Attitude

With roots tracing back to 1832, Longines today is one of the largest and most storied Swiss watch manufacturers, with a diverse collection that balances mass appealing modern watches with heritage-inspired pieces directed toward the enthusiast market. With Longines located under the Swatch Group umbrella alongside ETA, the brand has unique access to a number of specialized calibers while also offering more competitive price points compared to many other Swiss luxury watchmakers on the market.

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