Longines HydroConquest Hydroconquest Automatic 39 Blue
Reference L3.694.4.03.6
About this watch
The Longines Hydroconquest Automatic 39 Blue is a stunning timepiece that seamlessly combines style, functionality, and durability. Its vibrant blue dial grabs attention immediately, while the robust stainless steel case measures 39.00 mm in diameter, providing a perfect balance of elegance and adventure. The watch features a sapphire crystal, Arabic numeral indexes, and proprietary hands designed for enhanced visibility and functionality. The rotating dive bezel is a functional tool for divers and water sports enthusiasts, with a 0-60 scale for tracking elapsed time underwater. At the core lies the Longines caliber L619.2, an automatic movement featuring a frequency of 28,800 vibrations per hour and a power reserve of approximately 42 hours. The watch displays hours, minutes, and seconds with ease, while also featuring a date function that enhances its practicality. With a water resistance rating of 300 meters, it's suitable for swimming, snorkeling, and serious diving. The stainless steel bracelet is sturdy yet lightweight, ensuring comfort during all activities. This luxury watch positions itself in the mid-range segment, delivering value for money with its quality materials, precision movement, and brand heritage.
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Key Features
- Longines Caliber L619.2 automatic movement
- 300-meter water resistance rating
- Sapphire crystal glass
- Rotating dive bezel with 0-60 scale
- Stainless steel case and bracelet
- Arabic numeral indexes and proprietary hands
- Date function
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- Hydroconquest Automatic 39 Blue
- Reference
- L3.694.4.03.6
- Movement
- l619-2
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 39mm
- Dial Color
- Blue
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢](https://preview.redd.it/mjmjn7gaemzg1.jpg?width=640&crop=smart&auto=webp&s=40f67ac5acf667b2aa39f94a12de36a7ca27326f)
Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢
This Longines Hydroconquest is a 41mm two-tone diver's watch with a quartz movement.
- Condition: Used with light scratches
- Size: 41mm diameter
![[WTS] 2025 Longines Hydroconquest 41mm Ref: L37814056](https://preview.redd.it/ya49a4pp1mzg1.jpg?width=640&crop=smart&auto=webp&s=cb113d6816c7a2fe45079651eea6800af76c44d8)
2025 Longines Hydroconquest 41mm Ref: L37814056
This listing is for a 2025 Longines Hydroconquest 41mm watch, featuring an automatic self-winding caliber L888.5, unidirectional green ceramic bezel, and 300M water resistance.
- Condition: Like new with some minor marks on the bracelet and buckle
- Case size: 41mm
- Bracelet type: Stainless steel
- Water resistance: 300m depth rating
![[WTS] Longines Hydroconquest 42 mm “Green” 2026](https://preview.redd.it/hm9dwcf6qlzg1.jpg?width=640&crop=smart&auto=webp&s=1980c64f607b394182742d8f0b65514a62f73a2a)
Longines Hydroconquest 42 mm “Green” 2026
Up for sale is one of my new Longines Hydroconquest 42mm watches, I purchased several but find myself gravitating towards other models.
- Condition: New
- Case size: 42mm diameter
![[WTS] (Longines) (2026 Hydroconquest 39mm Commonwealth) Brand New and Unworn](https://preview.redd.it/fsb6xre45lzg1.jpg?width=640&crop=smart&auto=webp&s=a209b82914969f35eb9b0ccefdfa7e6763495a5f)
(Longines) (2026 Hydroconquest 39mm Commonwealth) Brand New and Unworn
This is a Limited Edition Hydroconquest Commonwealth Games watch from Longines, purchased brand new from an authorized dealer and still under warranty.
- Case diameter: 39mm
- Box condition: great condition with exception of price sticker on outer box
![[WTS] Longines HydroConquest 39mm Black Dial – 2026 Model, Worn Once. $1,995](https://preview.redd.it/ihyzvffwa5zg1.png?width=640&crop=smart&auto=webp&s=0aaa89e4a10141e5b2cb16432d533ac6562ca820)
Longines HydroConquest 39mm Black Dial – 2026 Model, Worn Once. $1,995
A Longines HydroConquest with a black dial and steel bracelet for sale. It's the latest iteration from 2026, purchased recently but only worn once to a wedding.
- Condition: Near mint, worn once
- Case size: 39mm
- Movement: Automatic
![[WTS] New Longines HydroConquest 42mm Frosted Blue Dial](https://preview.redd.it/dchzi1zvhyyg1.jpg?width=640&crop=smart&auto=webp&s=4acb97adce81fab67340b57de2dcad24b72c4898)
New Longines HydroConquest 42mm Frosted Blue Dial
A brand new Longines HydroConquest with a frosted blue dial in 42mm size.
- Condition: new
- Case size: 42mm
- Diameter: 42mm
![[WTS] Longines HydroConquest GMT Blue Ref: L3.790.4.96.6 (2026). New/Complete. $1,999](https://preview.redd.it/24f0tlqxbmyg1.jpg?width=640&crop=smart&auto=webp&s=05634fa81272e703de563acc5e0cf7d5e94065b7)
Longines HydroConquest GMT Blue Ref: L3.790.4.96.6 (2026). New/Complete. $1,999
The Longines HydroConquest GMT Blue is a true GMT diver with a sunray blue dial, blue ceramic bezel, and Calibre L844.5 automatic movement.
- Condition: Brand New
- Case diameter: 41mm
- Water resistance: 300m
- Movement type: Calibre L844.5 automatic
Longines HydroConquest, L3.781.4.06.9, Steel Diver, Olive, Excellent Condition.
This Longines HydroConquest is a steel diver's watch with an olive green matte dial and a unidirectional rotating ceramic bezel. The stainless steel case measures 41mm in diameter and has a water resistance of up to 300 meters.
- Condition: Excellent Condition
- Case Diameter: 41mm
- Thickness: 11.9mm
- Bezel Type: Unidirectional rotating Green Ceramic