Longines

HydroConquest

Ref. L3.781.3.78.7

$1,512

Average market price ·

Price Range

$700 – $2,204

Listings Analysed

62

Data last updated May 16, 2026 · Sources: Chrono24, eBay, WatchFinder & more

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Other Longines Watches

HydroConquest 41mm Black Ceramic Ref. L3.781.4.56.6 HydroConquest 41mm Blue Ceramic Ref. L3.781.4.96.6 HydroConquest 41mm Green Ceramic Ref. L3.781.4.06.6 HydroConquest 41mm Grey Ceramic Ref. L3.781.4.76.6 HydroConquest 41mm Black Aluminum Ref. L3.742.4.56.6 HydroConquest 41mm Blue Aluminum Ref. L3.742.4.96.6 HydroConquest 43mm Black Ceramic Ref. L3.782.4.56.6 HydroConquest 44mm Black Ceramic Ref. L3.841.4.56.6