Longines HydroConquest Hydronconquest Automatic 30

Reference L3.284.4.96.6

About this watch

The Longines HydroConquest Automatic 30 is a stunning timepiece that perfectly balances elegance and functionality. With its rich history dating back to 1832, Longines has mastered the art of creating high-quality watches that cater to both divers and watch enthusiasts alike. The HydroConquest series is designed for those who love adventure but also appreciate a touch of sophistication. This watch features a stunning blue dial reminiscent of the deep ocean, making it an ideal companion for any aquatic adventure. The round case, measuring 30mm in diameter, strikes a balance between boldness and subtlety, making it suitable for both men and women. Constructed from stainless steel, this watch not only looks good but is also incredibly durable, resistant to corrosion, and built to last. At the heart of the HydroConquest Automatic 30 is the Longines caliber L595 movement, an automatic movement that boasts a power reserve of 40 hours, ensuring accurate timekeeping even in harsh saltwater conditions. With a water resistance of up to 300 meters, this watch can handle serious diving expeditions and everyday wear alike. Its sleek design seamlessly transitions from casual outfits to formal attire, making it the perfect companion for any adventure.

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Key Features

Longines caliber L595 automatic movement
Stainless steel case with rotating bezel
Sapphire crystal glass for scratch resistance
Water resistance up to 300 meters
40-hour power reserve
30mm diameter case suitable for men and women

Specifications

Brand

Longines

Family

HydroConquest

Model

Hydronconquest Automatic 30

Reference

L3.284.4.96.6

Movement

l595

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 30mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

Longines HydroConquest 41mm - Green 💚🍀🌴🐸

Longines - HydroConquest · $899

A sharp, versatile diver featuring a stunning green dial and comes in overall excellent condition.

Condition: excellent with minor wear on clasp
Size: 41mm diameter
Wrist size range: 7.25-7.5 inches

Posted at

Apr 21, 2026, 7:42 PM

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Longines HydroConquest GMT 41mm Black, Full Kit, June 2025

Longines - HydroConquest GMT · $1,980

Up for sale is my mint condition Longines HydroConquest GMT, a full kit with box, papers, tags, and over 4 years left on the factory warranty.

Condition: Mint condition
Case dimensions: 41mm diameter, 49mm lug to lug, 12.9mm thickness
Movement: L844.5 with 72hrs power reserve
Water resistance: 300m

Posted at

Apr 19, 2026, 10:47 PM

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Longines Hydroconquest 39mm Black MINT

Longines - Hydroconquest 39mm Black · $2,200

A mint condition Longines Hydroconquest 39mm in black with a super comfortable bracelet and excellent bezel action.

Condition: MINT
Bracelet type: Super comfortable bracelet
Clasp type: Excellent on the fly clasp
Bezel action: Great bezel action

Posted at

Apr 19, 2026, 9:12 AM

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Longines HydroConquest 39mm Green Ceramic Bezel 2026 NEW L3.779.4.06.6 – $2800 + shipping

Longines - L3.779.4.06.6 · $2,800

This Longines HydroConquest features a stunning green ceramic bezel and matching dial, with a 39mm size that wears well on the wrist.

Condition: Brand new
Case Size: 39mm diameter
Bezel Material: green ceramic

Posted at

Apr 17, 2026, 6:00 AM

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2026 Longines Hydroconquest 39mm - Grey Bezel / Black Dial

Longines - L3-779-4-70-6 · $2,100

This 2026 Longines Hydroconquest is a 39mm grey bezel/black dial watch, purchased directly from Longines and regularly worn. It's free of major scratches or dents but has minor wear on the back of one lug.

Condition: Excellent to LNIB (like new in box)
Bracelet length: up to an 8in wrist
Bent link pin: one link pin is bent and unusable
Included accessories: all original packaging, accessories, and paperwork

Posted at

Apr 16, 2026, 3:09 PM

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Longines HydroConquest Sunray Blue- L3.790.4.96.6

Longines - L3.790.4.96.6 · $2,900

A brand new Longines HydroConquest with sunray blue dial, featuring a new box and papers.

Condition: Brand new
Box And Papers: brand new

Posted at

Apr 16, 2026, 12:11 PM

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[WTS] Longines HydroConquest GMT - Unworn, Full Set, Black Dial 41mm. The watch is in completely unworn condition and comes as a full set including box, papers, and all original accessories. Price:1700. UK-based. Happy to ship or meet depending on location. Dm if interested

Longines HydroConquest GMT - Unworn, Full Set, Black Dial 41mm. The watch is in completely unworn condition and comes as a full set including box, papers, and all original accessories. Price:1700. UK-based. Happy to ship or meet depending on location. Dm if interested

Longines - HydroConquest GMT · $1,700

The Longines HydroConquest GMT is a 41mm timepiece that comes as a full set including box, papers, and all original accessories. It is in completely unworn condition.

Condition: Unworn
Case Size: 41mm
Set: Full set including box, papers, and all original accessories

Posted at

Apr 16, 2026, 11:26 AM

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View listing on r/WatchExchange