Longines HydroConquest HydroConquest 39 Automatic Stainless Steel / Black / Rubber
Reference L3.780.4.56.9
About this watch
The Longines HydroConquest 39 Automatic is a remarkable watch that beautifully marries style and functionality. From its robust design to its precise movement, it’s a watch that not only tells time but also tells a story—your story. With a striking design and robust functionality, this watch is a true contender in the realm of diving timepieces. The HydroConquest boasts a chronometer certification, ensuring accuracy and precision in its timekeeping. Wearing a watch should feel like a second skin, and the HydroConquest excels in this department with its comfortable fit and adjustable rubber strap. It’s suitable for professional diving activities and offers a contemporary twist on classic diving aesthetics. The Longines caliber L888.5 movement features a silicon balance spring, enhancing precision and reliability.
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Key Features
- Stainless Steel Case
- 300m Water Resistance
- Chronometer Certification
- Longines Caliber L888.5 Movement
- Silicon Balance Spring
- Adjustable Rubber Strap
- 39mm Diameter
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- HydroConquest 39 Automatic Stainless Steel / Black / Rubber
- Reference
- L3.780.4.56.9
- Movement
- l888-5
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Chronometer
- Case
- 39mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
21mm Longines HydroConquest bracelet
- Condition: Excellent
- Bracelet length: 21mm
- Days worn: 1
![[WTS] Longines HydroConquest bracelet 21mm](https://preview.redd.it/uv3bfq7rxk1f1.jpg?width=640&crop=smart&auto=webp&s=19645803964bbdb988aba453b23dfeadd84e1872)
Longines HydroConquest bracelet 21mm
A Longines HydroConquest watch with a bracelet, in excellent condition and barely worn.
- Condition: Excellent
- Bracelet size: 21mm
- Shipping costs: [object Object]
![Longines Hydroconquest 41 mm L3.7424.56.6 [WTS]](https://preview.redd.it/5w8gv222qe1f1.jpeg?auto=webp&s=a45786faa1dbb0e31124bfe23b01e5b9c65cbda3)
Longines Hydroconquest 41 mm L3.7424.56.6
A Longines Hydroconquest, a water-resistant watch designed for everyday wear.
- Condition: Excellent
- Wrist size suitability: 7 inch wrist
- Box included: true
- Purchase history: Bought from Watch Maxx
![[WTS]✨ For sale: Longines HydroConquest L3.841.4.56.6 (2019) – Full Set!](https://external-preview.redd.it/rpZQDqXUw4YUpDqd2QaDEBvqXl5mvrNjCOE0XHptyr0.jpeg?auto=webp&s=d824558413e28dd4ccb4230112a25111e709fea4)
✨ For sale: Longines HydroConquest L3.841.4.56.6 (2019) – Full Set!
The Longines HydroConquest L3.841.4.56.6 is an automatic watch with a 64-hour power reserve, featuring a 44mm stainless steel case and a black sunray dial.
- Condition: Excellent
- Case material: stainless steel
- Diameter: 44mm
- Water resistance: 300m
![[WTS] Longines Hydroconquest GMT - Green](https://external-preview.redd.it/grtECkbYfmwb1XXLQUCRkFOj-0-IGq2Pe_lJkbiOYpQ.jpeg?auto=webp&s=fd53a83ef0f9fbfece08af02acff9247f394e72b)
Longines Hydroconquest GMT - Green
The Longines Hydroconquest GMT is a stylish and functional watch featuring a GMT function, perfect for travelers or those who need to keep track of multiple time zones.
- Condition: great condition with a slight scratch on the case and some wear on the bracelet
- Warranty Valid Until: 02/23/2024
- Bracelet Condition: some wear from regular usage
![[WTS] Longines HydroConquest 39 mm Black (Ref. L3.780.4.56.6) – Full Kit](https://external-preview.redd.it/IcqHK6Qv-92z09TPUn7SI-2qDEA4zpXoZh4TRuiHn5U.jpeg?auto=webp&s=f052eb8849d94e1a7dc9c51bd3d60adc5e043970)
Longines HydroConquest 39 mm Black (Ref. L3.780.4.56.6) – Full Kit
The Longines HydroConquest 39 mm Black is a stainless steel automatic watch featuring a black sunray dial, applied indices, and date at 3 o'clock. It has a matte black ceramic unidirectional bezel and a sapphire crystal with AR coating.
- Condition: Very good, light desk-wear with minor hairline scratches
- Case Size: 39 mm stainless steel case
- Dial Color: Black
- Water Resistance: 300 m
![[WTS] Longines HydroConquest Black dial 41mm $1499](https://preview.redd.it/hik3o4vlhpze1.jpeg?auto=webp&s=c00c48993fb0e7fc6c6b204f74ecef5015651908)
Longines HydroConquest Black dial 41mm $1499
This Longines HydroConquest features a black dial and is powered by an automatic movement, housed in a stainless steel case with sapphire crystal and a stainless steel bracelet.
- Condition: Full working order
- Case diameter: 41mm
- Crystal material: Sapphire
![[WTS] Longines Hydroconquest 41mm w/ Box](https://external-preview.redd.it/73Z9dVKIknNRBKNZwlUtQxVnUD5Sy2Fyhcrj7P3Mvv4.jpg?auto=webp&s=8d4ba9726b612e58e3a2bd78bb12f0d1790d1921)
Longines Hydroconquest 41mm w/ Box
A Longines Hydroconquest watch in 41mm case size, excluding crown guards.
- Bracelet markings: noticeable
- Wrist size: 7 inches

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