Longines watch database and price guide
Longines HydroConquest 41mm Automatic Blue: specs, new price and used value
For the USA market, a fair used price for the Longines HydroConquest 41mm Automatic Blue is usually $850-1300. A good buy is normally under $1000, while prices above $1450 need unusually strong condition, full set, warranty, scarcity, or live market confirmation.
- Retail price band
- $1775-2000
- New online band
- $1250-1700
- Used fair range
- $850-1300
- Good buy under
- $1000
- Avoid over
- $1450
- Value retention
- medium
Direct answer for buyers
For the USA market, a fair used price for the Longines HydroConquest 41mm Automatic Blue is usually $850-1300. A good buy is normally under $1000, while prices above $1450 need unusually strong condition, full set, warranty, scarcity, or live market confirmation.
Verdict: Worth buying used when the asking price is $1,000 or less, which is realistic for the $850–$1,300 band. Above $1,450 the deal stops making sense.
Watch specifications
- Brand: Longines
- Collection: HydroConquest
- Reference: L3.781.4.96.6
- Category: Swiss automatic dive watch
- Movement: Longines L888 automatic
- Case size: 41 mm
- Lug-to-lug: 50 mm
- Thickness: 12 mm
- Crystal: Sapphire crystal
- Water resistance: 300 m
- Market region: United States / North America
- Currency: USD
Who should buy it?
Best for: Buyers comparing diver options who want a specific Longines reference, a 41 mm case and a ceiling of $1,000 before walking away.
Not ideal for: Buyers who want one watch to do everything: this HydroConquest diver is a focused piece, not a universal daily wearer.
Market notes and resale
Longines has broad brand recognition, but retail discounts and many available examples keep used prices disciplined.
Price confidence: Medium-low confidence — verify current listings. Last editorial review: 2026-10-03.
Used buyer checklist
- Confirm the exact reference and dial configuration before paying
- Check bezel action and that the insert lines up at 12
- Compare the asking price against the 850-1300 used band on this page
- Verify the crown threads and that it screws down fully
- Ask about gasket condition and any water-resistance service
Known issues and pricing traps
- Bezel inserts are frequently replaced aftermarket
- Water resistance is only as good as the last service and gasket change
- Expect normal depreciation, not a windfall
Similar watches to compare
How this price range is set
Editorial estimate for the US market, not a live quote. Bands reflect typical retail and second-hand pricing for this reference and are revised when sold-listing evidence arrives.
Ranges are reduced for condition, missing links, no box or papers, unknown service history and poor photos, and adjusted when current new-watch discounts make a used price unattractive.
FAQ
What price should I target for the Longines HydroConquest 41mm Automatic Blue?
Use $1000 as the good-buy target. The fair used range is $850-1300, and a used listing above $1450 needs unusually strong condition, completeness, warranty or scarcity.
Should I buy the Longines HydroConquest 41mm Automatic Blue new or used?
Compare the used asking price with the current new online band of $1250-1700. If the saving is small, buying new can be safer because you get warranty and cleaner return rights.
What changes the value most?
Condition, box and papers, bracelet or strap completeness, service history, seller reputation, warranty status and unusually poor listing photos move the real transaction price.
What should I check before buying used?
Check the exact reference, case and bracelet condition, movement/module function, service or battery history, seller feedback and whether the price still makes sense after tax, shipping and return risk.
Important pricing note
USA watch prices move with condition, state sales tax, seller type, box and papers, current discounts, service history and seller trust. Use this page as a research starting point, then verify live US listings before paying.