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
![[WTS] Longines Hydroconquest 43mm - $950](https://preview.redd.it/m6h351h3rakf1.jpeg?auto=webp&s=dfc716611f308698339168c18739a540541089cb)
Longines Hydroconquest 43mm - $950
This Longines HydroConquest 43mm is in excellent working order and comes with a WatchMaxx full kit.
- Condition: Great condition
- Depth rating: 200m
![[WTS] Longines HydroConquest Ref. L3.780.3 – Two-Tone Steel & Rose Gold PVD – 39mm Automatic Diver – $999 Shipped](https://preview.redd.it/mxbo2ro1uvjf1.jpg?width=640&crop=smart&auto=webp&s=3b99c94fd0d84eb7a8054e7ed6c085dbf2acccde)
Longines HydroConquest Ref. L3.780.3 – Two-Tone Steel & Rose Gold PVD – 39mm Automatic Diver – $999 Shipped
a Longines HydroConquest Ref. L3.780.3, a Two-Tone Steel & Rose Gold PVD automatic diver watch with a 39mm case size.
- Case Material: steel and rose gold PVD
- Water Resistance: 39mm diameter
![[WTS] Longines Hydroconquest Automatic 41MM - Green Ceramic Bezel](https://preview.redd.it/byuqh6i86vjf1.jpg?width=640&crop=smart&auto=webp&s=710b313c8aa5dbbc4ad604a45dc3c95d7dd925ab)
Longines Hydroconquest Automatic 41MM - Green Ceramic Bezel
This Longines HydroConquest features a green ceramic bezel, automatic movement with date display, and a power reserve of up to 72 hours.
- Condition: Like new/never worn
- Case size: 41mm diameter
- Water resistance: 30 bar
- Crystal material: scratch-resistant sapphire crystal
![[WTS] For Sale – Longines HydroConquest Automatic (Ref. L3.649.4, Navy Dial) – €600 ONO Automatic 41mm with the navy blue dial.](https://preview.redd.it/2ly9oiu08djf1.jpg?width=640&crop=smart&auto=webp&s=94ce276e3e84139ce0c03f98ebb47c589b72f336)
![[WTS] Longines Hydroconquest Quartz 39mm - Very good condition - $500 shipped in US](https://preview.redd.it/ejmuo0hzn2jf1.jpg?width=640&crop=smart&auto=webp&s=503b2a27e4bbbd773cfd4a27b063e5c8c3c7def3)
![[WTS] Longines Hydroconquest GMT Black 41mm - Full set with extras $1850](https://preview.redd.it/pv3gnpd7agif1.jpg?width=640&crop=smart&auto=webp&s=69945eaad0d34b2f130def6d489e31cb18563521)
Longines Hydroconquest GMT Black 41mm - Full set with extras $1850
41mm Longines Hydroconquest GMT with full set of extras, including OEM rubber strap and two additional straps.
- Condition: Excellent
- Case size: 41mm
- Included extras: Longines black rubber strap, Longines style leather strap, orange cut-to-size strap

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