Longines HydroConquest HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Rubber
Reference L3.781.4.56.9
About this watch
The Longines HydroConquest 41 Automatic is a statement piece that combines elegance with functionality, boasting a robust design and professional diving capabilities. Its striking black ceramic bezel paired with a stainless steel body screams luxury while still being rugged enough for underwater adventures. The round shape and 41mm diameter make it a perfect fit for most wrists, providing a comfortable yet commanding presence. At the heart of this timepiece lies the Longines Caliber L888.2 automatic movement, boasting a power reserve of 65 hours and designed to withstand the rigors of both land and sea. With a water resistance of up to 300 meters, it's a serious contender for any diving enthusiast. The watch is constructed from stainless steel and ceramic, built to last with sapphire glass adding an extra layer of protection against scratches and shattering.
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Key Features
- 41mm diameter stainless steel case
- Black ceramic bezel with rotating 0-60 scale
- Longines Caliber L888.2 automatic movement
- 65-hour power reserve
- 300-meter water resistance
- Sapphire glass crystal
- Rubber strap with 21mm lug width
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Rubber
- Reference
- L3.781.4.56.9
- Movement
- l888-2
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 41mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] OEM Longines HydroConquest GMT 41mm Black Rubber Strap (21mm) w/ OEM Deployant Clasp – Excellent](https://preview.redd.it/mv87c1g0enqg1.jpg?width=640&crop=smart&auto=webp&s=2a32fe1a3788a77d32cc61bc45ef2cfbc01abbc4)
OEM Longines HydroConquest GMT 41mm Black Rubber Strap (21mm) w/ OEM Deployant Clasp – Excellent
A Longines HydroConquest GMT watch with a 41mm black rubber strap and deployant clasp, featuring a comfortable on-the-fly micro-adjust mechanism. The watch has been worn sparingly and shows minimal signs of wear.
- Condition: Lightly used
- Lug width: 21mm
- Clasp type: deployant
![[WTS] Longines Hydroconquest GMT - Sunray Brown - 41mm- Full Kit - Excellent Condition](https://preview.redd.it/74ipd0kadfqg1.jpg?width=640&crop=smart&auto=webp&s=11277a9581488bfda627dff42f1cb6f73f7fe61a)
Longines Hydroconquest GMT - Sunray Brown - 41mm- Full Kit - Excellent Condition
A Longines Hydroconquest GMT 41mm with a sunray brown dial and ceramic bezel insert, featuring an updated bezel and quick-adjust bracelet. It has a true GMT movement that keeps excellent time.
- Condition: Excellent
- Case size: 41mm
- Lug-to-lug: 49.2mm
- Thickness: 12.8mm
![[WTS] Longines HydroConquest 41mm Two Tone $1750](https://preview.redd.it/u7fkctlv2upg1.jpg?width=640&crop=smart&auto=webp&s=ba25fdac5147f1eb509169328273088acc6931ce)
Longines HydroConquest 41mm Two Tone $1750
Longines HydroConquest in a two-tone version, sold as-is.
- 41mm diameter: case size
![[WTS] Longines Hydroconquest Two-tone 41mm](https://preview.redd.it/puekxcrr4gpg1.jpg?width=640&crop=smart&auto=webp&s=e294ab3b5bb1c4ea1692a976f6def1f8e334c8ca)
Longines Hydroconquest Two-tone 41mm
This Longines Hydroconquest Two-Tone is a 41mm watch that comes with all its original components, including a blank card.
- Condition: Absolutely beautiful condition!
- Case size: 41mm
![[WTS] Longines Hydroconquest GMT 41mm](https://preview.redd.it/2cfcxnaix9pg1.jpg?width=640&crop=smart&auto=webp&s=f4e810aeaaa75abf3d85c8d4aa4d54b8f9fa4b07)
Longines Hydroconquest GMT 41mm
The Longines Hydroconquest GMT is a blue-dialed watch featuring a GMT complication, housed in a 41mm case. It comes with a complete full set and eBay verification.
- Condition: Pre-owned with minor wear
- Case size: 41mm
- Bracelet condition: Minor wear
![[WTS] Longines HydroConquest Automatic watch, 41.00 mm, stainless steel and ceramic bezel, L3.781.3.96.7– Ref L3.781.3.96.7 – Full Set – Feb 2026](https://preview.redd.it/7p381814g3pg1.jpg?width=640&crop=smart&auto=webp&s=875fd76e05b1011b6bde95b1b6bc62c97d445914)
Longines HydroConquest Automatic watch, 41.00 mm, stainless steel and ceramic bezel, L3.781.3.96.7– Ref L3.781.3.96.7 – Full Set – Feb 2026
- Bezel material: stainless steel and ceramic
- Case size: 41.00 mm
![[WTS] Longines HydroConquest GMT 41](https://preview.redd.it/0pqafsylrgog1.jpg?width=640&crop=smart&auto=webp&s=b5a758bbd6c299bd92a3b509ba8e20b1126461be)
Longines HydroConquest GMT 41
A Longines HydroConquest GMT 41, featuring a GMT function and 41mm case size.
- Condition: Pre-owned with minor cosmetic flaws
- Case size: 41mm diameter
- Water resistance: not specified
![[WTS] Longines HydroConquest 41mm - $1200 Shipped](https://preview.redd.it/ckrcxx7stbog1.jpg?width=640&crop=smart&auto=webp&s=82be888dec8ada65dd9eced3ac728c1a1704c5b3)
Longines HydroConquest 41mm - $1200 Shipped
Up for sale is my green Longines Hydroconquest 41, which I'm looking to replace with a Tudor Royal Date Day. The watch has been well taken care of and comes in excellent condition.
- Condition: great condition with a small scratch on the AR coating
- Bracelet condition: touched up
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