Longines
Pre-Loved Longines HydroConquest
An accessible Swiss dive watch with a genuinely useful spec sheet
HydroConquest models are produced in large numbers and depreciate meaningfully once new, making pre-owned examples one of the more sensible entry points into Swiss dive-watch ownership. Longines' consistent build quality means condition varies more by care than by inherent fragility, so buyers can be selective without paying a large premium for near-new pieces.
Live listings
84 pieces
Sourcing
Resale marketplaces & specialist resellers
Live listings — 84 pieces
Prices are sellers' asking prices. Nuvinty may earn a commission if you buy through a link. How we earn
84 of 84 shown
Longines
Longines Hydroconquest GMT 41mm Black L3.790.4.56.6
£1,999.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest 39mm Commonwealth Games 2026 Limited Edition
£1,842.70
via eBay
Ships from the UK · no import charges
Longines
Longines HYDROCONQUEST 39mm - L3.779.4.99.6 Ice Blue Dial Full Set
£1,750.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest 41mm Auto Chronograph Date Blue Dial L3.834.4.96.6
£1,689.70
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest Mens Watch 2025 Grey Gold Automatic Mans Wristwatches VGC
£1,557.10
via eBay
Ships from the UK · no import charges
Longines
2026 Longines HydroConquest 39mm Black Full Set, Box + Papers
£1,550.00
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest 41mm L3.781.3.58.9
£1,393.90
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest Date L3.780.3 Automatic Sunray Grey Dial 39mm RRP £1900
£1,332.69
via eBay
Ships from the UK · no import charges
Longines
LONGINES HydroConquest 39mm Steel & Black Automatic Watch L3.780.4.56.6 June 25
£1,195.00
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest 43mm - L37824966 Blue sunburst & steel bracelet
£1,128.70
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Chronograph Automatic Watch Silver Tone with Box+Papers
£1,128.70
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Blue L3.841.4 - Automatic - 44mm (2021) Full Set
£1,100.00
via eBay
Ships from the UK · no import charges
Longines
Longines HYDROCONQUEST 41mm Automatic Watch.
£1,077.70
via eBay
Ships from the UK · no import charges
Longines
LONGINES HYDROCONQUEST L37814056 Automatic watch 41 mm ceramic bezel watch only
£1,053.76
via eBay
Ships from Australia · UK import VAT likely
Longines
LONGINES HydroConquest Watch 41mm L3.781.3/L3.781.3.56.7 Gold Plated/Stainle...
£996.23
via eBay
Ships from Japan · UK import VAT likely
Longines
longines Men’s hydroconquest chronograph Stunning Condition Box And Papers
£2,046.70
via eBay
Ships from the UK · no import charges
Longines
Second Hand Longines Hydro Conquest Watch L3.784.4
£2,964.50
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest Commonwealth L37884099 2026 (13166)
£2,950.00
via eBay
Ships from the UK · no import charges
Longines
Fullset Longines Column Wheel Chronograph Automatic Black Men's Watch L2.750.4
£2,475.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest L3.781.4.06.9 Auto Green Ceramic MINT Box Papers 41mm
£984.24
via eBay
Ships from Japan · UK import VAT likely
Longines
Longines HydroConquest Automatic 41mm Black Dial 300m Bracelet Box & Papers
£975.70
via eBay
Ships from the UK · no import charges
Longines
2026 Longines Hydroconquest Auto Blue 39mm L3.779.4.90.6 Full Set PX Pos
£1,900.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest L37424967 41mm Blue Dial Automatic Two-Tone
£924.70
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Sunray Blue Men's Watch - L3.790.4.96.9
£919.60
via eBay
Ships from the UK · no import charges
Longines
April 2026 Longines HydroConquest Automatic Watch - Box/Papers - 39mm L37794066
£1,850.00
via eBay
Ships from the UK · no import charges
Longines
LONGINES HydroConquest L3.740.4.56.6 Quartz Men's Watch Black Dial Box
£896.09
via eBay
Ships from Japan · UK import VAT likely
Longines
Longines HydroConquest 41mm Blue L3.781.4.96.6 Pristine 2025 Full Set
£890.00
via eBay
Ships from the UK · no import charges
Longines
Men’s Longines Hydroconquest - Blue Dial - 41mm
£873.70
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Quartz Diver Black Dial Stainless Steel 300m Box & Papers
£849.99
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Blue 41mm L3.781.4.96.6 - June 2026
£843.10
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest 43mm Automatic Grey Dial 300m Date L3.782.4.76.6
£825.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Silver quartz 41mm Men's 300m Diver Swiss Watch. superb
£821.68
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Black l3.742.4.56.6 Automatic
£807.40
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Automatic 41mm Two-Tone Blue Gold Dial Watch ~ Full Set
£800.00
via eBay
Ships from the UK · no import charges
Longines
LONGINES HydroConquest 39mm Mens Watch Green MPN: L37794066
£1,613.20
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Automatic 39mm (Ref. L3.741.4), Great Condition
£785.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Automatic Black Dial 300m Diver, Steel Bracelet Box
£781.90
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest L3.640.4 Swiss Rotating Bezel Blue Watch
£771.70
via eBay
Ships from the UK · no import charges
Longines
LONGINES L3.780.3 HydroConquest Gray Dial 39mm Men's Watch SS Automatic
£1,562.14
via eBay
Ships from Japan · UK import VAT likely
Longines
Longines HydroConquest 41mm Black Dial Quartz 300m Date Bracelet Box Papers
£720.70
via eBay
Ships from the UK · no import charges
Longines
mens longines hydroconquest automatic watch 41 mm
£720.70
via eBay
Ships from the UK · no import charges
Longines
Mens Longines Hydroconquest Quartz Bracelet Watch Vgc Fully Working Boxed
£644.20
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest 41mm Mens Watch Blue Dial L3.781.3.96.7 Full Set (1568)
£1,295.00
via eBay
Ships from the UK · no import charges
Longines
Longines Hydro Conquest Chronograph Mens Watch Blue 300M Swiss Mans Wristwatches
£619.99
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest L3.688.4 Quartz Black Dial Men's Watch with Box & Papers
£1,000.96
via eBay
Ships from Japan · UK import VAT likely
Longines
Silver Dial Longines HydroConquest 39mm Gents quartz watch Sunray Silver Dial.
£475.90
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Men's Automatic L3.781.4966 Blue Dial 41mm Full Set
£924.70
via eBay
Ships from the UK · no import charges
Longines
LONGINES Hydro Conquest L3.781.4 Date black Dial Automatic Men's Watch_962496
£900.20
via eBay
Ships from Japan · UK import VAT likely
Longines
Longines HydroConquest Automatic Blue Dial 300m Diver Date Box Papers
£899.20
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest 44mm Automatic Watch with Box and Paper
£1,128.70
via eBay
Ships from the UK · no import charges
Longines
LONGINES HYDROCONQUEST AUTOMATIC 300M DIVERS WATCH L3.742.3 FULL SET !
£875.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Men's Watch 39mm Bracelet And Black Rubber Strap,Full Set
£822.70
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Automatic 41mm Black Dial & Bezel | Full Set | L3.742.4.5
£821.68
via eBay
Ships from the UK · no import charges
Longines
LONGINES HydroConquest L3.730.4.56.6 39mm
£791.64
via eBay
Ships from Japan · UK import VAT likely
Longines
LONGINES HYDROCONQUEST, L3.642.4.56.6 41mm. AUTOMATIC. Great condition.
£771.70
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest L3.840.4 Quartz 41mm 300m Black Dial/Bezel Date
£771.70
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest 41mm Sunray Blue Automatic Diver Watch L3.781.4
£768.71
via eBay
Ships from Australia · UK import VAT likely
Longines
Longines HydroConquest Men's Diver's Watch Blue Dial, 300m, 2020, Box, L38404
£761.50
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Automatic 41mm Black Dial Steel Mens Diver Watch L3.742.4
£750.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest 41mm Steel & Black Automatic Watch L3.743.3
£750.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest 41mm Black Automatic Men's Watch L3.642.4.56.6 Serviced
£740.00
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest Ref. L3.6404 ,300m Rotating Bezel Silver Dial Swiss Watch
£734.40
via eBay
Ships from Poland · UK import VAT likely
Longines
Longines Hydroconquest Ref.L3.6404 Rotating Bezel Blue Dial Swiss Watch-Box&Papr
£734.40
via eBay
Ships from Poland · UK import VAT likely
Longines
Longines HydroConquest Automatic 41mm Black Dial & Bezel | Full Set | L3.742.4
£720.69
via eBay
Ships from the UK · no import charges
Longines
LONGINES Watch HydroConquest
£722.49
via eBay
Ships from Japan · UK import VAT likely
Longines
Longines HydroConquest L3.640.4 Swiss Rotating Bezel Blue Watch 'Box and Paper'
£647.26
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest automatic,39mm, mesh, latest version L37794906
£1,638.70
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest GMT 41mm Automatic caliber L704 Ref L3.687.4. Men’s Watch
£632.50
via eBay
Ships from the UK · no import charges
Longines
2026 Longines HydroConquest Automatic Divers Watch - Box/Papers - 42mm L37884966
£1,600.00
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest Quartz Mens Watch Running Swiss Timepiece Used Item
£567.40
via eBay
Ships from Japan · UK import VAT likely
Longines
Longines HydroConquest Quartz Silver Dial Steel Mens Watch Works Well with Box
£550.00
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest Men’s Quartz Watch 44mm Stainless Black Dial L3.840.4
£550.00
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest 41mm L3.760.4.76.6 gents quartz nice condition boxed
£511.60
via eBay
Ships from the UK · no import charges
Longines
longines hydroconquest L 136404 35881936
£409.60
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest 39mm Automatic Black Dial
£669.70
via eBay
Ships from the UK · no import charges
Longines
Longines HydroConquest L3.742.3.96.7 41mm Automatic Blue Two Tone Full Set 2021
£899.99
via eBay
Ships from the UK · no import charges
Longines
LONGINES Hydro Conquest 39MM L3.779.4.96.6 Automatic Men's Watch_985339
£1,533.71
via eBay
Ships from Japan · UK import VAT likely
Longines
LONGINES WATCH L37814596 HYDROCONQUEST COMMONWEALTH GAMES BIRMINGHAM 2022 MEN'S
£1,385.74
via eBay
Ships from Japan · UK import VAT likely
Longines
Longines HydroConquest L3.781.4.76.9 Grey Stainless Steel Automatic Men's Wristwatch 41mm
£1,528.00
via The Luxury Closet
Ships from Dubai · import duty may apply
Longines
Longines HydroConquest L3.780.4 Black Stainless Steel Automatic Men's Wristwatch 39mm
£1,369.00
via The Luxury Closet
Ships from Dubai · import duty may apply
Longines
Longines HydroConquest Automatic Date 41mm, Serviced, Year Warranty, Box & Tags
£797.20
via eBay
Ships from the UK · no import charges
Longines
Longines Hydroconquest L3.781.4 Mens Watch
£771.70
via eBay
Ships from the UK · no import charges
Longines
LONGINES Hydro Conquest L3.648.4 Date Black Dial Automatic Men's Watch_972435
£717.97
via eBay
Ships from Japan · UK import VAT likely
Longines
LONGINES HydroConquest L3.651.4 Chronograph Automatic Diver Watch 46mm 300M
£679.13
via eBay
Ships from Japan · UK import VAT likely
eBay listings here are refreshed daily (the oldest was last checked at 07:30, 13 Oct, UK time), so details can differ from eBay. Check the listing on eBay before buying.
Longines HydroConquest auctions ending soon
All Longines auctions →
LonginesLongines Hydroconquest Automatic L3.781.4.06.6 Green Dial Bezel 41mm New Unused£58913 bidsEnds
LonginesLongines HydroConquest 41mm Green Dial/Bezel Automatic Date 300m SS Bracelet£1,2100 bidsEnds
LonginesLongines HydroConquest 41mm automatic watch Aluminum Bezel Black Dial Stainless£6890 bidsEnds
The oldest bid shown was last updated from eBay at 03:18, 14 Oct (UK time), so the live bid on eBay may be higher. We refresh auctions several times a day.
Live eBay auctions; the current bid and the seller's terms are on eBay. Affiliate links.
Why the HydroConquest is iconic
Longines introduced the HydroConquest in 2007 as its dedicated dive-watch line, drawing on the brand's long diving-watch heritage dating back to earlier Legend Diver models. The collection is defined by its ceramic unidirectional bezel, ample water resistance and ETA-based automatic movements, offering serious dive-watch specification at a comparatively modest price point.
Checking the price
Compare the live listings above for current asking prices. For a watch, the reference number, the year, condition and whether it comes as a full set (box and papers) move the price far more than anything else, so compare like with like.
Sizes & variants
Cases run from around 39mm to 43mm, in steel, steel-and-gold or full gold-tone finishes, with GMT and chronograph variants alongside the standard three-hand model.
How to authenticate
- 1.Check the case-back and movement reference against Longines' model numbers, as HydroConquest specifications changed across generations.
- 2.Inspect the ceramic bezel insert for chips or fading and confirm the bezel action clicks firmly with no play.
- 3.Verify the Longines winged-hourglass logo print quality on the dial and confirm any accompanying box, warranty card and links match the model.
Guidance only — always buy from sellers offering an authentication guarantee.
Buying a pre-owned Longines HydroConquest — FAQs
Is the HydroConquest a genuine dive watch?
Yes, it meets ISO dive-watch standards with a unidirectional bezel and water resistance suitable for recreational diving.
Which movement does it use?
Most versions use a Longines-branded automatic movement based on an ETA calibre, known for reliable everyday performance.
Does case size affect resale demand?
Mid-size cases around 41-43mm tend to see the strongest demand, though smaller sizes suit narrower wrists.
Before you buy
Explore more pre-owned