HydroConquest 39mm blue dial with black bezel on mesh bracelet
Close-up of Longines HydroConquest blue dial watch with black bezel on stainless mesh bracelet
Longines HydroConquest 39mm blue dial watch with black bezel on a steel mesh bracelet
Longines HydroConquest 39mm blue dial watch with black bezel on a mesh bracelet angled side view
Close-up of Longines HydroConquest blue dial with date window and black bezel on a mesh bracelet
Longines HydroConquest 39mm blue dial diver watch with black bezel on a mesh stainless steel bracelet
Back view of Longines HydroConquest case back with engraved globe logo in brushed stainless steel
Close up of HydroConquest back showing LONGINES name and globe emblem in brushed steel
HydroConquest 39mm mesh bracelet clasp with engraved logo

Authorized Dealer. Longines official 5 year warranty included

Longines

HydroConquest 39mm - Blue, Black Bezel on Mesh Bracelet

$2,400
Longines
$2,400

HydroConquest 39mm - Blue, Black Bezel 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

L3.779.4.99.6

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

Blue

Dial Features

Frosted blue sunray, 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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