Longines HydroConquest Hydroconquest Automatic 39
Reference L3.648.4.16.6
About this watch
The Longines Hydroconquest Automatic 39, model L3.648.4.16.6, is an embodiment of style and functionality in the world of luxury watches. Founded in 1832, Longines has a rich history of watchmaking that marries tradition with innovation. This remarkable timepiece boasts a stunning design that seamlessly blends elegance and sportiness, making it suitable for both casual wear and formal occasions. The round stainless steel case features a polished finish that catches the light beautifully, while the pristine white dial exudes sophistication. The watch is equipped with a scratch-resistant sapphire crystal, ensuring its durability even with regular wear. At the heart of the Hydroconquest lies the Longines caliber L633.5, a robust automatic movement renowned for its reliability and accuracy. This movement boasts a frequency of 28,800 vibrations per hour, offering precise timekeeping that you can trust. With a water resistance of up to 300 meters (or 1000 feet), this watch is designed to withstand the pressures of deep-sea adventures. The unidirectional rotating bezel allows for accurate tracking of elapsed time underwater, while the stainless steel bracelet adds to its rugged aesthetic and comfort. This luxury watch offers excellent value for money, making it a fantastic choice for anyone looking to invest in a high-quality timepiece without breaking the bank.
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Key Features
- Longines caliber L633.5 automatic movement
- Stainless Steel case with polished finish
- Scratch-resistant sapphire crystal
- Water resistance up to 300 meters (1000 feet)
- Unidirectional rotating bezel for dive time tracking
- Stainless Steel bracelet for durability and comfort
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- Hydroconquest Automatic 39
- Reference
- L3.648.4.16.6
- Movement
- l633-5
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 39mm
- Dial Color
- White
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] Longines HydroConquest 42mm](https://preview.redd.it/lexhgnkwaj3h1.jpg?width=640&crop=smart&auto=webp&s=a86b0779eb73daec310429b4bf9a275548eb95f9)
Longines HydroConquest 42mm
This listing is for a brand new Longines HydroConquest 42mm blue dial watch, featuring a ceramic bezel and quick micro adjust bracelet.
- Condition: Brand New In Box (BNIB)
- Diameter: 42mm
- Material: ceramic and lacquered
![[WTS] Longines Hydroconquest 43mm -Like New](https://preview.redd.it/mbobopeezc3h1.jpg?width=640&crop=smart&auto=webp&s=d76e8e2b7cb2e36112f424a86ddc9374602b03f2)
Longines Hydroconquest 43mm -Like New
This Longines Hydroconquest is a 43mm watch with a black dial, purchased new in April and still in fantastic condition.
- Condition: Like New
- Case size: 43mm
- Lug to lug length: 53
- Thickness: 11.90mm
![[WTS] Longines Hydroconquest 41mm - Black Dial](https://preview.redd.it/hhhqkjke053h1.jpg?width=640&crop=smart&auto=webp&s=8d30f8a05d7c9889f2d6cd40426e9121508375cc)
Longines Hydroconquest 41mm - Black Dial
A Longines Hydroconquest 41mm Automatic watch with a black dial, stainless steel case, and ceramic bezel.
- Condition: Good condition, minor scratches/scuffs in sapphire and minimal wear marks on bracelet and clasp
- Case size: 41mm diameter
- Bezel material: stainless steel and ceramic
- Bracelet type: original bracelet (and links)
![[WTS] Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,750](https://preview.redd.it/q8y1luj4743h1.jpg?width=640&crop=smart&auto=webp&s=bf073f3c5aab40974abcbb809d5655c3248d1a4a)
Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,750
The Longines Hydroconquest Chronograph 41 is a high-performance Swiss diver's watch featuring a blue ceramic bezel and screw-down crown, powered by the L688.2 column-wheel chronograph movement with a 54-hour power reserve.
- Condition: Very good with minor usage marks
- Movement: Longines L688.2, automatic column wheel chronograph with 27 jewels, 28,800 bph, and a 54-hour power reserve
- Case size: 41mm diameter
- Thickness: 15.6mm
![[WTS] Longines Hydroconquest 43mm](https://preview.redd.it/6gb1epj8yq2h1.jpg?width=640&crop=smart&auto=webp&s=7d7fd5691e645b024aa1a049b0c21e598e5b65b2)
Longines Hydroconquest 43mm
The watch is a Longines Hydroconquest model L3.782.4.56.6 with a black dial and a 43mm case size.
- Condition: Brand new with minor use (about a month)
- Case size: 43mm diameter
- Lug to lug length: 53mm
- Thickness: 11.90mm
![[WTS] (brand new) Longines HydroConquest 39mm - $1700 shipped](https://preview.redd.it/td2bjuhwxk2h1.jpg?width=640&crop=smart&auto=webp&s=1347131218519237b78443a9672b63095aa7c867)
(brand new) Longines HydroConquest 39mm - $1700 shipped
This brand new Longines HydroConquest features a 39mm stainless steel case with black dial and ceramic bezel insert, along with a date display at the 3 o'clock position.
- Condition: Unworn
- Case material: stainless steel
- Bracelet material: stainless steel
- Water resistance: 300m
![[WTS] Longines hydroconquest 39 mm green](https://preview.redd.it/rq8wp29fwh2h1.jpg?width=640&crop=smart&auto=webp&s=da5b8da736fbc2099069247138e97a16996477e9)
Longines hydroconquest 39 mm green
This Longines HydroConquest is a recent purchase from a US authorized dealer, still in its original packaging and with all papers.
- Condition: great condition
- Bracelet condition: has a small ding on the clasp
- Box and paper status: all included
- Additional strap type: aftermarket rubber
![[WTS] Longines HydroConquest 39mm Blue – Full Set – Excellent Condition](https://preview.redd.it/d8we6u297g2h1.jpg?width=640&crop=smart&auto=webp&s=38b6e51237898ed419c7d1cc262fdabc212980b9)
Longines HydroConquest 39mm Blue – Full Set – Excellent Condition
This Longines HydroConquest is a 39mm watch with an automatic movement and ceramic bezel, featuring a blue dial and bezel.
- Condition: Excellent Condition
- Case size: 39mm diameter
![[WTS] RARE CONFIGURATION Longines HydroConquest 42mm | 2026 Gen | Green Ceramic | Green Lacquered Dial | Ref. L3.788.4.06.6 | Never Worn | Full Kit | Warranty Card 5/8/26](https://preview.redd.it/fd515t9kkc2h1.jpg?width=640&crop=smart&auto=webp&s=af7f902dfe994efb689e4262712035c47d009802)
RARE CONFIGURATION Longines HydroConquest 42mm | 2026 Gen | Green Ceramic | Green Lacquered Dial | Ref. L3.788.4.06.6 | Never Worn | Full Kit | Warranty Card 5/8/26
This is a rare configuration Longines HydroConquest 42mm watch with a green ceramic bezel and a green lacquered dial. It features an automatic movement, 300m water resistance, and a full kit including the original box, papers, and warranty card.
- Condition: never worn
- Bracelet: upgraded Longines mesh style bracelet
- Movement: Calibre L888.5, automatic, silicon balance spring, 72hr power reserve
- Water Resistance: 300m / 30 bar