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 39mm black bezel - 2026 release

Longines - Hydroconquest 39mm black bezel · $2,050

A 39mm black bezel Longines Hydroconquest with a black dial, sold in full kit and unregistered for warranty purposes.

Condition: Like-new
Case diameter: 39mm
Condition notes: No scratches anywhere on the case, crystal or bracelet

Posted at

May 18, 2026, 4:29 PM

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Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550

Longines - L3.740.3.56.7 · $550

A Longines Hydroconquest quartz two-tone diver watch, featuring a black dial and 41mm case size.

Condition: Pre-owned with light scratches
Case size: 41mm
Material: two tone

Posted at

May 17, 2026, 9:13 AM

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Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550

Longines - L3.740.3.56.7 · $550

This Longines Hydroconquest is a fun and capable diver that comes in the 41mm version, featuring a black dial and quartz movement.

Condition: pre-owned with light scratches
Case Size: 41mm
Movement Type: quartz

Posted at

May 16, 2026, 7:05 PM

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Longines Hydroconquest 39mm black bezel/dial

Longines - 39mm black bezel/black dial Hydroconquest · $2,200

This Longines Hydroconquest 39mm features a black bezel and dial, is in excellent condition, and comes with its full kit including boxes, hangtags, warranty card, and owner's manual.

Condition: Like-new
Case size: 39mm diameter
Box status: full-kit
Warranty remaining: five years

Posted at

May 16, 2026, 5:17 PM

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View listing on r/WatchExchange