Longines HydroConquest Hydroconquest Chronograph
Reference L3.644.4.96.2
About this watch
The Longines Hydroconquest Chronograph (Model L3.644.4.96.2) is a masterful blend of style, functionality, and durability. This luxury watch boasts a striking blue color with polished stainless steel finish, featuring a gem-set bezel for added luxury. The 41mm round case is robust enough for diving yet elegant enough for daily wear. Its scratch-resistant sapphire glass ensures a pristine look for years to come. The ETA caliber 7750 movement provides accuracy and durability, boasting a frequency of 28,800 vibrations per hour and a power reserve of 42 hours. With its chronograph function and date/day display, this watch is perfect for divers and those who appreciate fine craftsmanship. Its water resistance of 300 meters makes it suitable for snorkeling, swimming, or even a rain shower. The stainless steel bracelet is sturdy yet comfortable, featuring a secure clasp that ensures it stays on your wrist. Whether you're at the office, out on the town, or diving into the ocean, this watch fits seamlessly into any scenario.
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Key Features
- ETA caliber 7750 automatic movement
- Scratch-resistant sapphire glass
- 300m water resistance
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- Hydroconquest Chronograph
- Reference
- L3.644.4.96.2
- Movement
- 7750
- Movement Features
-
- Hours, Minutes, Small Seconds
- Date, Day
- Chronograph
- Case
- Stainless Steel 41mm
- 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/rp8zbzy4sd0h1.jpg?width=640&crop=smart&auto=webp&s=21116ff5110f1b74d4b7bda264317dfe55f99585)
Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $600 🚢
A quartz-powered diver's watch from Longines, featuring a black dial and two-tone yellow gold PVD finish on the 41mm case.
- Condition: Good (light scratches)
- Case size: 41mm
- Material: two tone yellow gold PVD
- Movement: quartz
![[WTS] Longines Hydroconquest 43mm (updated pictures)](https://preview.redd.it/11p4qnon560h1.jpg?width=640&crop=smart&auto=webp&s=3d165c7cb611511155a69847f097a14536111e8c)
Longines Hydroconquest 43mm (updated pictures)
This Longines Hydroconquest 43mm features a black dial on a stainless steel bracelet and has been worn only 4-6 times since its purchase. It comes with a full set, including the box, tags, warranty cards, and is still under Jomashop's 2-year warranty.
- Condition: Fantastic, worn 4-6 times
- Case size: 43mm
- Lug to lug: 53mm
- Thickness: 11.90mm
![[WTS] (brand new) Longines HydroConquest 39mm - $1800 shipped](https://preview.redd.it/hhn5x9gi950h1.jpg?width=640&crop=smart&auto=webp&s=127fbc96289090a876136eae3e19a3201923e901)
(brand new) Longines HydroConquest 39mm - $1800 shipped
This brand new Longines HydroConquest features a black dial, stainless steel case and bracelet, sapphire crystal with anti-reflective coating, and is powered by the L888.4 automatic movement.
- Condition: Unworn
- Case material: stainless steel
- Bracelet material: stainless steel
- Water resistance: 300m
![[WTS] 2026 Longines HydroConquest 39mm - Black Ceramic - Newest Release - Full Set](https://preview.redd.it/xz7b44mm8tzg1.jpg?width=640&crop=smart&auto=webp&s=b3daf2f6a5742e16f2a308812d6febe2533806d7)
2026 Longines HydroConquest 39mm - Black Ceramic - Newest Release - Full Set
The newly redesigned Longines HydroConquest in the highly sought-after 39mm size, featuring a refined dial and upgraded bracelet.
- Condition: Excellent Used Condition
- Size: 39mm diameter
- Thickness: ~11.9mm
- Lug-to-lug length: 47mm
![[WTS] Longines Hydroconquest 43mm L3.782.4.56.6-3 weeks owned.](https://preview.redd.it/q87s2169hozg1.jpg?width=640&crop=smart&auto=webp&s=ea163d3c8d0e0ecac6b09e09c73bf296af8af1fb)
Longines Hydroconquest 43mm L3.782.4.56.6-3 weeks owned.
A Longines Hydroconquest 43mm watch on a black dial with a stainless steel bracelet, now on an Ali Rubber strap.
- Condition: Mint condition, worn approximately 5 times
- Case size: 43mm diameter
- Lug to lug: 53mm
- Thickness: 11.90mm
![[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