Longines - Hydroconquest - L3.780.4 - Men - 2010-2020
06
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01
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Current bid
€ 15
Reserve price not met
Expert
Selected by Pasquale Picca
Expert and certified watch technician with over 15 years of experience, author and founder of CHLB
Estimate € 1,200 - € 1,400
8 other people are watching this object
 Bidder 5890 | €15 | |
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 Bidder 8117 | €10 |
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Longines Hydro Conquest L3.780.4 men's automatic diver watch in stainless steel, 39 mm case, blue dial with blue ceramic bezel, steel bracelet, date, 300 m water resistance, in good condition with minor signs of wear.
AI-assisted summary
Description from the seller
This model showcases Longines' watchmaking expertise with its sporty yet elegant design. The 39mm stainless steel case offers a robust and comfortable fit on the wrist. The blue ceramic bezel and the blue sunray dial give it a sophisticated and modern look.
Powered by an automatic caliber, the watch ensures high precision and reliability. With 300m water resistance, a screw-down crown, a unidirectional rotating bezel, and Super-LumiNova coated indices and hands, it's a reliable companion for diving and various water sports.
The stainless steel bracelet further enhances the sporty design, making it a perfect choice for daily wear.
(Brand/Model/Reference number)
・LONGINES Hydro Conquest L3.780.4
(Color)
・Blue
・Silver
(Material)
・Stainless Steel
・Sapphire Glass
・Ceramic
(Size Approx.)
・Case Width: Approx. 39mm / Without Crown
・Lug to Lug: Approx. 48mm
・Lug Width: Approx. 19mm
・Thickness: Approx. 12mm
(Strap Length)
Approx. 15.5cm (6.1in) with no extra links
(Daily Rate)
・Dial Up: Approx. +6s/day at 290°
・3 Down: Approx. -1s/day at 250°
(Detailed Features)
・Automatic Movement
・Unidirectional Rotating Bezel
・Screw Down Crown
・Calendar
(Reference Number)
・L3.780.4
(Serial Number)
・538132**
(Appearance)
・There are some minor scratches overall, including on the case sides and bracelet. However, there is no major damage, and the glass and dial are in good condition.
(Function)
・Confirmed operational when gently shaken.
・Bezel rotation and calendar function work properly.
[ Appearance ]
Scuffs from normal use.
*Please check photos.
[ Functional ]
It works properly.
Quick set(Date) : work well.
[ What's included ]
Only what is shown in the photos. Please understand.
Total condition is subjective, so please judge to the pictures for more details.
Please check the pictures and don't hesitate to ask any questions about the item!
[ Shipping ]
I send a product by DHL or EMS.
I attach the tracking number.
Please bid it without worrying.
Shipping is available from Monday to Friday.
Weekends are not available because office is closed.
[ International Buyers ]
Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost.
These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
Please look at the pictures carefully to make a decision.
We sell the item as described on the listing but some items are old watches
so If the item is a QZ watch, then if it becomes out of battery on the way to your hand,
please replace the battery by yourself.
(we are basically selling working product.)
Seller's Story
A Story Born from a Culture That Cherishes Belongings
In Japan, we have a beautiful tradition — the deep respect for the things we own.
Inspired by this spirit, we carefully select premium pre-owned timepieces from the Japanese market and share them with customers around the world.
One day, we realized something important.
We’re not just delivering products — we’re delivering the people and stories behind them.
Our team includes certified Japanese watchmakers who hold national qualifications.
They restore each timepiece with precision and care, breathing new life into every tick of the second hand.
Our cleaning team is made up of individuals striving to reintegrate into society.
As they polish each watch, they also polish their own paths forward — step by step.
What we do isn’t just reuse — it’s a story of revival that connects objects, people, and futures.
Our mission is to deliver best-selling timepieces and unique collector’s items to customers worldwide — in their most beautiful and refined condition.
And at the same time, to support those who are rebuilding their lives through meaningful work.
Each watch we send carries not only time, but the stories and hopes that come with it.
That is our pride. That is our purpose.
This model showcases Longines' watchmaking expertise with its sporty yet elegant design. The 39mm stainless steel case offers a robust and comfortable fit on the wrist. The blue ceramic bezel and the blue sunray dial give it a sophisticated and modern look.
Powered by an automatic caliber, the watch ensures high precision and reliability. With 300m water resistance, a screw-down crown, a unidirectional rotating bezel, and Super-LumiNova coated indices and hands, it's a reliable companion for diving and various water sports.
The stainless steel bracelet further enhances the sporty design, making it a perfect choice for daily wear.
(Brand/Model/Reference number)
・LONGINES Hydro Conquest L3.780.4
(Color)
・Blue
・Silver
(Material)
・Stainless Steel
・Sapphire Glass
・Ceramic
(Size Approx.)
・Case Width: Approx. 39mm / Without Crown
・Lug to Lug: Approx. 48mm
・Lug Width: Approx. 19mm
・Thickness: Approx. 12mm
(Strap Length)
Approx. 15.5cm (6.1in) with no extra links
(Daily Rate)
・Dial Up: Approx. +6s/day at 290°
・3 Down: Approx. -1s/day at 250°
(Detailed Features)
・Automatic Movement
・Unidirectional Rotating Bezel
・Screw Down Crown
・Calendar
(Reference Number)
・L3.780.4
(Serial Number)
・538132**
(Appearance)
・There are some minor scratches overall, including on the case sides and bracelet. However, there is no major damage, and the glass and dial are in good condition.
(Function)
・Confirmed operational when gently shaken.
・Bezel rotation and calendar function work properly.
[ Appearance ]
Scuffs from normal use.
*Please check photos.
[ Functional ]
It works properly.
Quick set(Date) : work well.
[ What's included ]
Only what is shown in the photos. Please understand.
Total condition is subjective, so please judge to the pictures for more details.
Please check the pictures and don't hesitate to ask any questions about the item!
[ Shipping ]
I send a product by DHL or EMS.
I attach the tracking number.
Please bid it without worrying.
Shipping is available from Monday to Friday.
Weekends are not available because office is closed.
[ International Buyers ]
Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost.
These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
Please look at the pictures carefully to make a decision.
We sell the item as described on the listing but some items are old watches
so If the item is a QZ watch, then if it becomes out of battery on the way to your hand,
please replace the battery by yourself.
(we are basically selling working product.)
Seller's Story
A Story Born from a Culture That Cherishes Belongings
In Japan, we have a beautiful tradition — the deep respect for the things we own.
Inspired by this spirit, we carefully select premium pre-owned timepieces from the Japanese market and share them with customers around the world.
One day, we realized something important.
We’re not just delivering products — we’re delivering the people and stories behind them.
Our team includes certified Japanese watchmakers who hold national qualifications.
They restore each timepiece with precision and care, breathing new life into every tick of the second hand.
Our cleaning team is made up of individuals striving to reintegrate into society.
As they polish each watch, they also polish their own paths forward — step by step.
What we do isn’t just reuse — it’s a story of revival that connects objects, people, and futures.
Our mission is to deliver best-selling timepieces and unique collector’s items to customers worldwide — in their most beautiful and refined condition.
And at the same time, to support those who are rebuilding their lives through meaningful work.
Each watch we send carries not only time, but the stories and hopes that come with it.
That is our pride. That is our purpose.
Details
Brand
Longines
Gender
Men
Model
Hydroconquest
Band material
Steel
Reference Number
L3.780.4
Band length
Very short (under 160 mm)
Shipped Insured
Yes
Repainted dial
No
Period
2010-2020
Movement
Automatic
Dial colour
Blue
Case material
Stainless steel
Original box included
No
Original papers included
No
Case diameter
39 mm
Original warranty included
No
Condition
Good - visible signs of wear
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