Longines HydroConquest Hydroconquest Chronograph Tachymeter
Reference L3.651.4.16.6
About this watch
The Longines HydroConquest L3.651.4.16.6 is a robust and stylish diver's watch that combines performance with elegance. Its 41mm stainless steel case features a rotating bezel, marked from 0 to 60, for precise timing underwater. The sapphire crystal glass is scratch-resistant and adds to the watch's durability. A closed case back limits visibility of the movement but adds to the watch's sturdiness. With a lug width of 21mm, the Hydroconquest comes with a well-crafted stainless steel bracelet that feels solid yet comfortable on the wrist. The chronograph feature is a highlight, providing additional functionality for timing events. The date function ensures you're always on top of your schedule. Whether diving or just out for a casual lunch, this watch feels right at home. Its impressive 300m water resistance makes it a reliable companion for underwater adventures. With a reliable and accurate automatic movement, the Hydroconquest keeps time with impressive accuracy. A power reserve of 42 hours ensures you can take it off for a day or two without worrying about winding it again. The Longines HydroConquest is more than just a watch; it's a statement piece that combines performance with elegance.
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Key Features
- Longines caliber L667 automatic movement
- 41mm stainless steel case with rotating bezel
- Sapphire crystal glass for scratch-resistance and durability
- 300m water resistance for underwater adventures
- Chronograph feature for timing events
- Date function for scheduling
- 42-hour power reserve for reliability
Specifications
- Brand
- Longines
- Family
- HydroConquest
- Model
- Hydroconquest Chronograph Tachymeter
- Reference
- L3.651.4.16.6
- Movement
- l667
- Movement Features
-
- Hours, Minutes, Small Seconds
- Date
- Chronograph
- Case
- Stainless Steel 41mm
- Dial Color
- White
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings
Longines Hydroconquest GMT
A Longines Hydroconquest GMT with a blue dial, featuring a 41mm case and traveler-style GMT function. The watch has a sapphire crystal and an L844 movement, and is accompanied by its original boxes, warranty card, and all bracelet links.
- Condition: like-new, near flawless
- Case Size: 41mm
- Movement Type: L844
Longines Hydroconquest GMT FSOT
A Longines Hydroconquest GMT with a blue dial and 41mm x 49.5 x 12.9mm dimensions, featuring a traveler-style GMT function and a tapering bracelet.
- Condition: like-new, near flawless
- Movement: L844
- Bph: 25.2
![[WTS] 2023 Longines HydroConquest XXII Commonweath Games LE L3.781.4.59.6 Full Set](https://preview.redd.it/de84ewlcu65f1.jpg?width=640&crop=smart&auto=webp&s=4a16e11a54c6ccc469427c420f368dbaad88a9ce)
2023 Longines HydroConquest XXII Commonweath Games LE L3.781.4.59.6 Full Set
This Longines HydroConquest XXII Commonwealth Games LE features a 41mm steel case with a black and multi-color rotating dive bezel, a black dial, and a stainless steel bracelet. It is powered by an automatic mechanical movement.
- Condition: Very nice preowned condition with some light scratches on the case, bracelet and buckle.
- Case material: Steel
- Bezel dimensions: 41mm diameter
- Dial color: Black
Longines Hydroconquest GMT Black Dial
This Longines Hydroconquest GMT is a travel watch that has been well-maintained and stored since October 2024. It features a black dial and comes with its original boxes, warranty card, booklets, hang tag, and all links.
- Condition: excellent condition
- Box Contents: inner and outer box, warranty card, booklet, hang tag
- Clasp Condition: minor desk dive marks

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