Longines HydroConquest Hydroconquest Quartz 39 Blue
Reference L3.688.4.03.6
About this watch
The Longines HydroConquest L3.688.4.03.6 is a statement piece that embodies the spirit of adventure, precision, and luxury. This timepiece is not just another watch; it's a reflection of your lifestyle, blending classic elegance with modern features. The reliable quartz movement ensures precision and reliability, while the robust stainless steel construction enhances durability. With its stunning blue dial, versatile design, and trusted brand heritage, this watch caters to a wide array of tastes and needs. Whether you're dressing up for a formal event or going casual for a weekend outing, the HydroConquest fits seamlessly into any wardrobe. The vibrant blue color adds a pop of personality, while the stainless steel body ensures it pairs well with both casual and formal attire.
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Key Features
- Quartz movement (Longines caliber L263)
- Stainless steel construction
- 30 meters water resistance
- Sapphire glass
- Rotating bezel for elapsed time tracking
- Blue dial with Arabic numerals
- 39 mm diameter and 19 mm lug width
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- Hydroconquest Quartz 39 Blue
- Reference
- L3.688.4.03.6
- Movement
- l263
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 39mm
- Dial Color
- Blue
- Crystal
- Sapphire
- Water Resistance
- 30
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