Longines HydroConquest Hydroconquest Chronograph
Reference L3.644.4.56.2
About this watch
The Longines Hydroconquest Chronograph (Model L3.644.4.56.2) is a stunning piece that combines sophistication with robust functionality. Founded in 1832, Longines has a rich heritage in watchmaking that spans nearly two centuries. The Hydroconquest line is designed for those who appreciate both style and performance. This timepiece is powered by the revered ETA 7750 movement, an automatic movement providing reliable and accurate timekeeping experience with a frequency of 28,800 vibrations per hour and a power reserve of 42 hours. The watch features a gem-set bezel, stainless steel case with a water resistance of up to 300 meters, and a black dial with mixed indexes for high visibility. The proprietary hands are designed for readability, ensuring quick time-telling in low-light conditions. With its impressive water resistance and robust chronograph functionality, this watch is perfect for divers, snorkelers, and anyone who appreciates luxury and performance.
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Key Features
- ETA 7750 automatic movement
- Water resistance up to 300 meters
- Gem-set bezel
- Stainless steel case
- Black dial with mixed indexes
- Proprietary hands for readability
- Robust chronograph functionality
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- Hydroconquest Chronograph
- Reference
- L3.644.4.56.2
- Movement
- 7750
- Movement Features
-
- Hours, Minutes, Small Seconds
- Date, Day
- Chronograph
- Case
- Stainless Steel 41mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
![[WTS] Longines Hydroconquest L3.781.3.58.9, Rose Gold & Rubber Strap](https://external-preview.redd.it/sedHMjnUuvXnaLuh_m9cQhYhZl3crWETDnGNzUAc5Y8.jpeg?auto=webp&s=396c686013e60f636725d758dced3e56c6f019c5)
Longines Hydroconquest L3.781.3.58.9, Rose Gold & Rubber Strap
This Longines Hydroconquest features a silver-tone stainless steel case with a black rubber strap, uni-directional rotating black ceramic bezel, and a black dial with rose gold-tone hands and index hour markers.
- Condition: Gently used with minor wear and tear, polishable
- Case size: 43mm diameter
- Water resistance: 300m / 1000ft depth rating
- Movement: Longines Calibre L888 Automatic movement
![[WTS] Longines Hydroconquest GMT, Excellent Condition, Box and papers](https://external-preview.redd.it/Kzo8UWMgzALN780NYa3F84HmhbkBhgW-EWtPHE8JwFA.jpeg?auto=webp&s=cb3be154dd49e9ef824e140297a48ccd9f6855af)
Longines Hydroconquest GMT, Excellent Condition, Box and papers
This Longines Hydroconquest GMT features a stainless steel case with black dial and ceramic bezel, housed on a stainless-steel bracelet. It has a screw-down back and crown, with a unidirectional notched bezel in black ceramic.
- Condition: Excellent condition
- Case size: 41mm diameter
Longines Hydroconquest Automatic
The Longines Hydroconquest is a comfortable and reliable automatic watch. It features a 41mm case size with a blue aluminum bezel and dial.
- Condition: Pre-owned, has been worn
- Case Size: 41mm
- Bezel Fade: yes, but lines up properly
- Wrist Size Fit: 7 7/8 inch wrist

>>REDUCED<< LONGINES HYDROCONQUEST ALL CERAMIC L3.784.4
This Longines HydroConquest All Ceramic features a ceramic case and bezel, black ZrO2 dial, and is water resistant to 300m. The watch has a 43mm diameter and comes with a rubber strap and deployant clasp.
- Condition: MINT
- Case material: ceramic
- Diameter: 43mm
- Water resistance: 300m
![[WTS] Longines Hydroconquest GMT 41mm Sunray Blue](https://external-preview.redd.it/TPNrRrfWvZmcz1LNiN8Vo1Lq8TX9AfOzDkaAzN1Pz-4.jpeg?auto=webp&s=7e4349a56034aab4504d4c94697bb5133ec12d3a)
Longines Hydroconquest GMT 41mm Sunray Blue
A Longines Hydroconquest GMT with a Sunray blue dial and ceramic bezel in a beautiful pre-owned condition.
- Condition: Very nice pre-owned condition, some minor hairlines on the bracelet/clasp
- Diameter: 41mm
- Bezel material: ceramic
![[WTS] Longines HydroConquest 39mm Ceramic Bezel (Like New. 5 Years of Factory Warranty)](https://external-preview.redd.it/Vr3TfrMNEW8B7uxK10VFGEYEnKTjEtjt6nmOLfzYjVc.jpeg?auto=webp&s=0ffd9112e7fc08f9f32e9f58c60b849b32bafe98)
Longines HydroConquest 39mm Ceramic Bezel (Like New. 5 Years of Factory Warranty)
A Longines HydroConquest 39mm watch with a ceramic bezel, purchased from an authorized dealer in Florence, Italy and barely worn.
- Condition: Like new
- Warranty: 5 years remaining
- Case Size: 39mm
REDUCED Longines HydroConquest 41mm Blue Automatic
The Longines HydroConquest is a blue automatic watch from 2024, purchased brand new with all original box and papers. It features the newest movement, keeping excellent time.
- Condition: nearly new
- Movement: ETA C07.621
- Water Resistance: 300m
REDUCED Longines HydroConquest 41mm Blue
This Longines HydroConquest 41mm Blue is a men's watch that features the newest movement, keeping excellent time with a +1.3spd deviation.
- Condition: Nearly new condition
- Purchase Year: 2024
- Warranty Status: Full warranty
- Movement Accuracy: +1.3spd