Longines HydroConquest HydroConquest 39 Automatic Stainless Steel / Blue / Rubber
Reference L3.780.4.96.9
About this watch
The Longines HydroConquest 39 Automatic is a masterpiece of modern watchmaking that exudes luxury and sophistication. With its stunning blue dial, matte finish, and rotating bezel, this timepiece is a true showstopper. The Longines caliber L888.5 self-winding movement features a silicon balance spring, ensuring accuracy and longevity. Certified as a chronometer, this watch has passed rigorous tests for precision, making it a serious contender in the diving watch category. With its 300-meter water resistance rating, durable rubber strap, and sapphire crystal, this watch is built to withstand the rigors of underwater adventures while maintaining a chic appearance for everyday wear.
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Key Features
- 39mm stainless steel case
- Longines caliber L888.5 self-winding movement
- Silicon balance spring for accuracy and longevity
- 300-meter water resistance rating
- Sapphire crystal for superior clarity and protection
- Durable rubber strap with 19mm lug width
- Certified chronometer for precision
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- HydroConquest 39 Automatic Stainless Steel / Blue / Rubber
- Reference
- L3.780.4.96.9
- Movement
- l888-5
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Chronometer
- Case
- 39mm
- Dial Color
- Blue
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] Longines HydroConquest GMT Blue Ref: L3.790.4.96.6 (2026). New/Complete. $1,999](https://preview.redd.it/24f0tlqxbmyg1.jpg?width=640&crop=smart&auto=webp&s=05634fa81272e703de563acc5e0cf7d5e94065b7)
Longines HydroConquest GMT Blue Ref: L3.790.4.96.6 (2026). New/Complete. $1,999
The Longines HydroConquest GMT Blue is a true GMT diver with a sunray blue dial, blue ceramic bezel, and Calibre L844.5 automatic movement.
- Condition: Brand New
- Case diameter: 41mm
- Water resistance: 300m
- Movement type: Calibre L844.5 automatic
![[WTS] New Longines Hydroconquest 42mm Frosted Blue Dial](https://preview.redd.it/p91j2kpsejyg1.jpeg?auto=webp&s=9ac016ff9120a01f02fa1458897abd9878e27d5e)
New Longines Hydroconquest 42mm Frosted Blue Dial
A brand new Longines Hydroconquest 42mm with a frosted blue dial, sold exclusively at Corporate boutiques. The watch comes with all links, papers, and box.
- Condition: Brand new
- Diameter: 42mm
![[WTS] 2026 Longines HydroConquest L37884906 42 mm Black Dial Blue Bezel Full Set $1,900](https://preview.redd.it/ct5ldusrpfyg1.jpg?width=640&crop=smart&auto=webp&s=6b13d5c447ea4486f055edabe339d2d9df46e3f0)
2026 Longines HydroConquest L37884906 42 mm Black Dial Blue Bezel Full Set $1,900
The Longines HydroConquest L37884906 features a black dial and blue ceramic bezel, with an automatic movement providing reliable performance. The watch has a robust build, unidirectional dive bezel, and strong water resistance, making it a capable tool watch while maintaining a refined aesthetic.
- Condition: Excellent (pre-owned, minimal wear)
- Year: 2026
- Case size: 42mm diameter
- Case material: Stainless steel
![[WTS] Longines HydroConquest Green Dial Two Tone $1350 41mm](https://preview.redd.it/29r2f0ebqxxg1.jpg?width=640&crop=smart&auto=webp&s=0dffba53801dd6b0d374fbd1416428d7feeef8ca)
Longines HydroConquest Green Dial Two Tone $1350 41mm
This Longines HydroConquest features a green dial and two-tone design.
![[WTS] Longines HydroConquest 43mm](https://preview.redd.it/e51lhy1dztxg1.jpg?width=640&crop=smart&auto=webp&s=7ed73a07757103d378f4e1721f8a75ce148daee0)
Longines HydroConquest 43mm
A Longines HydroConquest 43mm diver watch for sale, with excellent timekeeping and minimal signs of wear.
- Condition: Pre-owned with normal wear
- Bracelet condition: normal wear with worn clasp
- Case condition: scratch-free except on the back
- Papers included: true
![[WTS] Longines HydroConquest 39mm 2026 Commonwealth Games Limited Edition](https://preview.redd.it/j4hyuklq8rxg1.jpg?width=640&crop=smart&auto=webp&s=6a22640f03a2a9be81178fc740f1debeeedd9cc1)
Longines HydroConquest 39mm 2026 Commonwealth Games Limited Edition
This is a brand new, unworn Longines HydroConquest limited edition watch from the 2026 Commonwealth Games collection. It features a 39mm case and comes with various accessories.
- Condition: Brand New Unworn
- Case size: 39mm
- Limited edition status: One of 2026
![[WTS] Longines Hydroconquest 41mm ceramic Ref. L3.781.4.56.6](https://preview.redd.it/ofaisyzhimxg1.jpg?width=640&crop=smart&auto=webp&s=6b40bca29f1af35e3d66814bd98d3e090b10c691)
Longines Hydroconquest 41mm ceramic Ref. L3.781.4.56.6
This Longines Hydroconquest features a 41mm ceramic case, black dial, and is sized for an approximate 7.4" wrist.
- Condition: Pre-owned with scratches on the case and bracelet
- Case material: ceramic
- Bracelet size: 7.4in diameter
- Warranty: no warranty included
![[WTS] Longines Conquest 39 mm $600 and Longines HydroConquest 39 mm $700](https://external-preview.redd.it/VKjyJdZC4PwI2FtRzDvRTtaVQzMPIuXjuIXPXhUN9SY.jpeg?auto=webp&s=45e277aaaa84249364d40f735c3ac491c7b59286)
Longines Conquest 39 mm $600 and Longines HydroConquest 39 mm $700
Two Longines watches for sale, the Conquest L3.776.4 and the HydroConquest L3.741.4.
- Condition: Very good
- Case size: 39 mm
- Year purchased: 2025
- Clasp wear: minor wear on clasp from being stored at work desk
![[WTS] Longines HydroConquest 41 – $975](https://preview.redd.it/wpl7qqqokcxg1.jpg?width=640&crop=smart&auto=webp&s=98cc69f40bd36ace376dc385a890c28eb1d702e7)
Longines HydroConquest 41 – $975
This Longines HydroConquest 41 features a 41mm case, minimal wear, and comes with its box, papers, hangtag, and warranty card.
- Condition: Very Good Pre-owned Condition
- Case Size: 41mm diameter
- Bracelet Condition: hairlines throughout polished surfaces, some desk wear