Ref. L3.788.4.06.6 · Diver
HydroConquest collection · 15 watches
The market
The forum market
Browse forum listings and their asking prices. Market+ adds medians with their sample sizes and the weekly trend.
Longines on the secondhand market
+8.5%
2026 so far · +3.2% to +16.0% · 44 matched watches
In line with the index
Divers as a group: +6.5% · 303 matched watches
Year-by-year readings →The connection engine
The community take
The Longines HYDROCONQUEST (ref. L3.788.4.06.6) is an automatic diver watch, with a 42mm stainless steel case, 11.7mm thick, powered by the Longines L888 movement and a 72-hour power reserve. Water resistance is rated to 300m. Manufacturer MSRP is $2,200. The dial color is green.
On real wrists · 1
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