Longines HydroConquest HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Bracelet
Reference L3.781.4.56.6
About this watch
When it comes to timepieces that combine functionality, style, and Swiss craftsmanship, the Longines HydroConquest 41 Automatic is a standout choice. Designed for those who appreciate both elegance and ruggedness, this watch is a perfect companion for diving enthusiasts and watch collectors alike. At the heart of the HydroConquest is the Longines caliber L888.2, an automatic movement that boasts impressive features: 300 meters water resistance, 65-hour power reserve, and 25,200 vibrations per hour. The HydroConquest's design is both striking and practical, with a diameter of 41.00 mm, stainless steel construction, and a rotating dive bezel with a 0-60 scale. Its black dial exudes sophistication, with mixed indexes and proprietary hands adding an element of uniqueness. Whether you're at a fancy dinner or exploring underwater, this watch maintains its elegance. The Longines HydroConquest 41 Automatic is perfect for a diverse audience, suitable for various occasions from casual outings to formal events.
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Key Features
- Automatic movement with 25,200 vibrations per hour
- 300 meters water resistance (30 ATM)
- 65-hour power reserve
- Stainless steel construction and closed case back
- Sapphire crystal glass for scratch-resistance
- Rotating dive bezel with a 0-60 scale
- Black dial with mixed indexes and proprietary hands
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Bracelet
- Reference
- L3.781.4.56.6
- Movement
- l888-2
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 41mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] Longines Hydroconquest 41mm ceramic Ref. L3.781.4.56.6](https://preview.redd.it/ofaisyzhimxg1.jpg?width=640&crop=smart&auto=webp&s=6b40bca29f1af35e3d66814bd98d3e090b10c691)
Longines Hydroconquest 41mm ceramic Ref. L3.781.4.56.6
This Longines Hydroconquest features a 41mm ceramic case, black dial, and is sized for an approximate 7.4" wrist.
- Condition: Pre-owned with scratches on the case and bracelet
- Case material: ceramic
- Bracelet size: 7.4in diameter
- Warranty: no warranty included
![[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
![[WTS] New Longines Hydroconquest 42mm Frosted Blue Dial](https://preview.redd.it/p91j2kpsejyg1.jpeg?auto=webp&s=9ac016ff9120a01f02fa1458897abd9878e27d5e)
New Longines Hydroconquest 42mm Frosted Blue Dial
A brand new Longines Hydroconquest 42mm with a frosted blue dial, sold exclusively at Corporate boutiques. The watch comes with all links, papers, and box.
- Condition: Brand new
- Diameter: 42mm