Longines HydroConquest Hydroconquest Automatic 39 Black
Reference L3.641.4.56.6
About this watch
The Longines Hydroconquest Automatic 39 Black is a testament to the perfect fusion of functionality and sophistication, designed for both adventure and elegance. With its stunning black dial and striking stick and dot indexes, it offers a beautiful contrast that catches the light beautifully. The 39mm stainless steel case strikes a perfect balance between robust and refined, making it comfortable for everyday wear while still being tough enough for underwater adventures. At the core of this timepiece lies the Longines caliber L633.5, an automatic movement based on the renowned ETA 2824-2. This movement is celebrated for its reliability and accuracy, ensuring precise timekeeping with a frequency of 28,800 vibrations per hour. The Hydroconquest boasts a power reserve of approximately 38 hours, making it ideal for everyday wear. With a water resistance rating of 300 meters, this watch is designed to handle the pressure of aquatic activities. Its rotating bezel with a 0-60 scale allows you to track elapsed time underwater, ensuring your safety while looking incredibly stylish.
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Key Features
- 39mm stainless steel case
- Longines caliber L633.5 automatic movement
- Sapphire crystal glass for scratch resistance
- 300m water resistance
- Rotating 0-60 bezel for dive tracking
- Stainless steel bracelet with adjustable clasp
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- Hydroconquest Automatic 39 Black
- Reference
- L3.641.4.56.6
- Movement
- l633-5
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 39mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] Longines Hydroconquest GMT 41mm L3.790.4.56.6](https://preview.redd.it/pnc5fzsalvpg1.jpg?width=640&crop=smart&auto=webp&s=0a88425480853875b50997d2783615cabe3916a5)
Longines Hydroconquest GMT 41mm L3.790.4.56.6
A modern classic Longines Hydroconquest GMT in great condition, with a flawless glass and excellent case.
- Condition: Pre-loved, great condition with typical bracelet wear
- Case Size: 41mm
- Bracelet Condition: typical wear
![[WTS] Longines HydroConquest 41mm Two Tone $1750](https://preview.redd.it/u7fkctlv2upg1.jpg?width=640&crop=smart&auto=webp&s=ba25fdac5147f1eb509169328273088acc6931ce)
Longines HydroConquest 41mm Two Tone $1750
Longines HydroConquest in a two-tone version, sold as-is.
- 41mm diameter: case size
![[WTS] Longines Hydroconquest Two-tone 41mm](https://preview.redd.it/puekxcrr4gpg1.jpg?width=640&crop=smart&auto=webp&s=e294ab3b5bb1c4ea1692a976f6def1f8e334c8ca)
Longines Hydroconquest Two-tone 41mm
This Longines Hydroconquest Two-Tone is a 41mm watch that comes with all its original components, including a blank card.
- Condition: Absolutely beautiful condition!
- Case size: 41mm
![[WTS] Longines Hydroconquest GMT 41mm](https://preview.redd.it/2cfcxnaix9pg1.jpg?width=640&crop=smart&auto=webp&s=f4e810aeaaa75abf3d85c8d4aa4d54b8f9fa4b07)
Longines Hydroconquest GMT 41mm
The Longines Hydroconquest GMT is a blue-dialed watch featuring a GMT complication, housed in a 41mm case. It comes with a complete full set and eBay verification.
- Condition: Pre-owned with minor wear
- Case size: 41mm
- Bracelet condition: Minor wear
![[WTS] Longines HydroConquest Automatic watch, 41.00 mm, stainless steel and ceramic bezel, L3.781.3.96.7– Ref L3.781.3.96.7 – Full Set – Feb 2026](https://preview.redd.it/7p381814g3pg1.jpg?width=640&crop=smart&auto=webp&s=875fd76e05b1011b6bde95b1b6bc62c97d445914)
Longines HydroConquest Automatic watch, 41.00 mm, stainless steel and ceramic bezel, L3.781.3.96.7– Ref L3.781.3.96.7 – Full Set – Feb 2026
- Bezel material: stainless steel and ceramic
- Case size: 41.00 mm
![[WTS] Longines HydroConquest GMT 41](https://preview.redd.it/0pqafsylrgog1.jpg?width=640&crop=smart&auto=webp&s=b5a758bbd6c299bd92a3b509ba8e20b1126461be)
Longines HydroConquest GMT 41
A Longines HydroConquest GMT 41, featuring a GMT function and 41mm case size.
- Condition: Pre-owned with minor cosmetic flaws
- Case size: 41mm diameter
- Water resistance: not specified
![[WTS] Longines HydroConquest 41mm - $1200 Shipped](https://preview.redd.it/ckrcxx7stbog1.jpg?width=640&crop=smart&auto=webp&s=82be888dec8ada65dd9eced3ac728c1a1704c5b3)
Longines HydroConquest 41mm - $1200 Shipped
Up for sale is my green Longines Hydroconquest 41, which I'm looking to replace with a Tudor Royal Date Day. The watch has been well taken care of and comes in excellent condition.
- Condition: great condition with a small scratch on the AR coating
- Bracelet condition: touched up
![[WTS] 2025 Longines HydroConquest 39 - $950](https://preview.redd.it/ipy1vtrj7png1.jpg?width=640&crop=smart&auto=webp&s=1f6bc392d05f3a4cf70d5f4693db3233e4c14e02)
2025 Longines HydroConquest 39 - $950
This is a 2025 Longines HydroConquest 39, a great everyday diver presented as a complete set. It has honest signs of wear and comes with a watch maxx kit, box, papers, and full links.
- Condition: Good overall condition with visible signs of wear
- Year: 2025
- Included Accessories: Watch maxx kit,Box,Papers,Full links
- Shipping Options: Buyer add $30 FedEx 2-Day Air or provide own label
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