Longines HydroConquest HydroConquest 39 Automatic Stainless Steel / Blue / Bracelet / Star Navigation
Reference L3.675.4.96.6
About this watch
The Longines HydroConquest 39 Automatic is a statement piece that effortlessly combines style with high performance. With its stainless steel construction and vibrant blue dial, this watch exudes sophistication and durability. The proprietary hands add a touch of uniqueness, while the rotating bezel allows for precise timing of underwater activities. At the heart of the HydroConquest 39 is the Longines Caliber L633.5, boasting precision and durability with a frequency of 28,800 vibrations per hour. The addition of a date function further enhances its practicality, and the impressive water resistance of 300 meters makes it suitable for professional diving, swimming, and other water sports. Comfort is key, and this watch does not disappoint, featuring a secure clasp that ensures a perfect fit. With its blend of style, durability, and precision, the HydroConquest 39 stands tall in the world of luxury watches.
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Key Features
- Stunning blue dial with stick and dot indexes
- Robust Longines Caliber L633.5 automatic movement
- 300-meter water resistance for diving enthusiasts
- Sapphire glass for scratch resistance and durability
- Adjustable stainless steel bracelet for comfort and style
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- HydroConquest 39 Automatic Stainless Steel / Blue / Bracelet / Star Navigation
- Reference
- L3.675.4.96.6
- Movement
- l633-5
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 39mm
- Dial Color
- Blue
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] Longines Hydroconquest 39mm black bezel - 2026 release](https://preview.redd.it/dzaj40g6hy1h1.jpg?width=640&crop=smart&auto=webp&s=e0c4109dad4c105e423f52606ae0c699f43b8b83)
Longines Hydroconquest 39mm black bezel - 2026 release
A 39mm black bezel Longines Hydroconquest with a black dial, sold in full kit and unregistered for warranty purposes.
- Condition: Like-new
- Case diameter: 39mm
- Condition notes: No scratches anywhere on the case, crystal or bracelet
![[WTS] Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550](https://preview.redd.it/q20m9xof6p1h1.jpg?width=640&crop=smart&auto=webp&s=64fde65853d57c300e741bf001e1d758a57af2f2)
Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550
A Longines Hydroconquest quartz two-tone diver watch, featuring a black dial and 41mm case size.
- Condition: Pre-owned with light scratches
- Case size: 41mm
- Material: two tone
![[WTS] Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550](https://preview.redd.it/xctcalo9zk1h1.jpg?width=640&crop=smart&auto=webp&s=650ef270e5e02acf60bc86c32f9eda97d9f00f45)
Longines Hydroconquest Quartz Two Tone L3.740.3.56.7 - $550
This Longines Hydroconquest is a fun and capable diver that comes in the 41mm version, featuring a black dial and quartz movement.
- Condition: pre-owned with light scratches
- Case Size: 41mm
- Movement Type: quartz
![[WTS] Longines Hydroconquest 39mm black bezel/dial](https://preview.redd.it/hcrkd9h0gk1h1.jpg?width=640&crop=smart&auto=webp&s=222db94fb2131661aa9dba6f84c909ccca5404c9)
Longines Hydroconquest 39mm black bezel/dial
This Longines Hydroconquest 39mm features a black bezel and dial, is in excellent condition, and comes with its full kit including boxes, hangtags, warranty card, and owner's manual.
- Condition: Like-new
- Case size: 39mm diameter
- Box status: full-kit
- Warranty remaining: five years
![[WTS] Longines HydroConquest Two Tone Green Dial $1499](https://preview.redd.it/hphc8owmqi1h1.jpg?width=640&crop=smart&auto=webp&s=270753abc4debb68258ba2ec87a877355f71de20)
Longines HydroConquest Two Tone Green Dial $1499
Longines HydroConquest Two Tone Green Dial for sale
![[WTS] Longines HydroConquest 42mm | 2026 Gen | Green Ceramic | Green Lacquered Dial | Ref. L3.788.4.06.6 | Never Sized, Never Worn | Full Kit | Warranty Card 5/8/26](https://preview.redd.it/vtb6vc2eki1h1.jpg?width=640&crop=smart&auto=webp&s=ecf33b0d47c8fa5982fd26fddc1205cdc129cf67)
Longines HydroConquest 42mm | 2026 Gen | Green Ceramic | Green Lacquered Dial | Ref. L3.788.4.06.6 | Never Sized, Never Worn | Full Kit | Warranty Card 5/8/26
This is the first real redesign the HydroConquest has seen in nearly a decade with thinner case and upgraded ceramic bezel with audible click.
- Condition: Never sized, never worn
- Movement: Calibre L888.5, automatic, silicon balance spring, 72hr power reserve
- Water resistance: 300m / 30 bar
- Box papers: Full double-box set with instruction manual and tags present
![[WTS] Longines Hydroconquest 41mm Black dial](https://preview.redd.it/r9zms2m3dc1h1.jpg?width=640&crop=smart&auto=webp&s=fb0ee84491b408eecf29c00533dbf94361e7658e)
Longines Hydroconquest 41mm Black dial
A Longines Hydroconquest 41mm with a black dial is being sold. The watch features an original box and bracelet, as well as two additional straps.
- Condition: Very good condition, a few scuffs on the sapphire but no scratches
- Case size: 41mm
- Bracelets: 2
- Straps: 2
![[WTS] Longines Hydroconquest 39mm L3.779.4.96.6](https://preview.redd.it/zub5je7bs71h1.jpg?width=640&crop=smart&auto=webp&s=c13e2690b5c678b496a1014ea9a0e708206ff81c)
Longines Hydroconquest 39mm L3.779.4.96.6
A Longines Hydroconquest 39mm with a frosted blue dial, this watch features a unique and stylish design.
- Condition: Like new
- Size: 39mm diameter
![[WTS] Longines Hydroconquest 39mm](https://preview.redd.it/j0qiwnh0r71h1.jpeg?auto=webp&s=149e7e806f9c75a04bd76edd823cd16d02223f52)
Longines Hydroconquest 39mm
A Longines Hydroconquest diver's watch in excellent condition, featuring a 2026 movement and virtually no signs of wear.
- Condition: 9.6/10 - extremely clean example
- Movement: 2026
- Case condition: virtually no signs of wear
- Box included: true