Longines HydroConquest HydroConquest 41 Automatic Stainless Steel / Ceramic / Green / Bracelet
Reference L3.781.4.06.6
About this watch
The Longines HydroConquest 41 Automatic (L3.781.4.06.6) is a statement piece that combines functionality and style. The stunning green dial, crafted from stainless steel, features a mix of indexes for readability and proprietary hands coated with luminous material for night-time visibility. The ceramic bezel is scratch-resistant and complements the case's polished finish. At its heart lies the Longines Caliber L888.3 movement, boasting a 65-hour power reserve and impressive water resistance of up to 300 meters. Wearing this watch is an experience in itself, with a secure yet comfortable stainless steel bracelet that feels substantial on the wrist. Its striking design and robust features make it a top contender in luxury dive watches.
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Key Features
- 41mm Stainless Steel Case
- Rotating Ceramic Bezel
- Longines Caliber L888.3 Movement
- 300m Water Resistance
- Sapphire Crystal
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- HydroConquest 41 Automatic Stainless Steel / Ceramic / Green / Bracelet
- Reference
- L3.781.4.06.6
- Movement
- l888-3
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 41mm
- Dial Color
- Green
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[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
![[WTS] Brand New Longines Hydroconquest Exclusive- 42mm- L3.788.4.98.6](https://preview.redd.it/q26sl5svr7xg1.jpg?width=640&crop=smart&auto=webp&s=35ade7fef60777ee57bfd803716e17f01ab44fdd)
Brand New Longines Hydroconquest Exclusive- 42mm- L3.788.4.98.6
The Longines Hydroconquest Exclusive features a 42mm case with a beautiful frosted blue dial and comes in brand new condition.
- Condition: Brand new, unworn
- Case size: 42mm
![[WTS] New Longines HydroConquest 42mm](https://preview.redd.it/4tbw7x88txwg1.jpg?width=640&crop=smart&auto=webp&s=c68839911e49be8b515c2d7924578d4d0c1d9987)
New Longines HydroConquest 42mm
A new Longines HydroConquest in the 42mm size, with a mesh band and box and papers included.
- Condition: New
- Case Size: 42mm
- Band Type: mesh
![[WTS] Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,850](https://preview.redd.it/tol5a6cznswg1.jpg?width=640&crop=smart&auto=webp&s=7ad74ad9fa0ac8cf212bf09a7327a6f1f42c55d1)
Longines Hydroconquest Chronograph 41 Ref. L3.783.4 – Travel Box & Manual | $1,850
The Longines Hydroconquest Chronograph is a high-performance Swiss diver's watch that features a 41mm case, blue ceramic bezel, and screw-down crown. It houses the calibre L688.2, a column-wheel chronograph movement with a 54-hour power reserve.
- Condition: Very good with minor usage marks
- Case Size: 41 x 51mm stainless steel case with a thickness of 15.6mm and a lug width of 21mm
- Movement: Longines L688.2, automatic column wheel chronograph with 27 jewels, 28,800 bph, and a 54-hour power reserve
- Water Resistance: 300 (30 ATM)
![[WTS] Longines HydroConquest GMT 41mm Black, Full Kit, June 2025](https://preview.redd.it/c4c7iqv7e9wg1.jpg?width=640&crop=smart&auto=webp&s=e250849b5d9c5e65f6e77a3d09a1db59c45552a5)
Longines HydroConquest GMT 41mm Black, Full Kit, June 2025
Up for sale is my mint condition Longines HydroConquest GMT, a full kit with box, papers, tags, and over 4 years left on the factory warranty.
- Condition: Mint condition
- Case dimensions: 41mm diameter, 49mm lug to lug, 12.9mm thickness
- Movement: L844.5 with 72hrs power reserve
- Water resistance: 300m
![[WTS] Longines Hydroconquest 39mm Black MINT](https://preview.redd.it/v4pffvhrc5wg1.jpeg?auto=webp&s=814fab44f946ceacdedaffaa381634bee5d33c82)
Longines Hydroconquest 39mm Black MINT
A mint condition Longines Hydroconquest 39mm in black with a super comfortable bracelet and excellent bezel action.
- Condition: MINT
- Bracelet type: Super comfortable bracelet
- Clasp type: Excellent on the fly clasp
- Bezel action: Great bezel action
![[WTS] Longines HydroConquest 39mm Green Ceramic Bezel 2026 NEW L3.779.4.06.6 – $2800 + shipping](https://preview.redd.it/aoihsdkp4qvg1.jpg?width=640&crop=smart&auto=webp&s=afddea4ac8c74bd6c345aacb7c77a1c4f9e694fc)
Longines HydroConquest 39mm Green Ceramic Bezel 2026 NEW L3.779.4.06.6 – $2800 + shipping
This Longines HydroConquest features a stunning green ceramic bezel and matching dial, with a 39mm size that wears well on the wrist.
- Condition: Brand new
- Case Size: 39mm diameter
- Bezel Material: green ceramic
![[WTS] 2026 Longines Hydroconquest 39mm - Grey Bezel / Black Dial](https://preview.redd.it/1iats6ttplvg1.jpeg?auto=webp&s=a3e1b3b3cb0efcf818e0cc8de77f1c55f05751aa)
2026 Longines Hydroconquest 39mm - Grey Bezel / Black Dial
This 2026 Longines Hydroconquest is a 39mm grey bezel/black dial watch, purchased directly from Longines and regularly worn. It's free of major scratches or dents but has minor wear on the back of one lug.
- Condition: Excellent to LNIB (like new in box)
- Bracelet length: up to an 8in wrist
- Bent link pin: one link pin is bent and unusable
- Included accessories: all original packaging, accessories, and paperwork