With a heritage going back to 1832 in Saint-Imier, Switzerland, Longines has always combined elegance with a genuine passion for performance. The HydroConquest collection, first introduced in 2007, represents the brand's dedicated dive watch line — built for the water, but refined enough for everyday wear.

The Longines HydroConquest, reference L3.781.4.56.6, is a well-executed 41 mm stainless steel dive watch with a nicely structured sunray black dial featuring applied Arabic numeral and index hour markers with Swiss Super-LumiNova and a date display at 3 o'clock. The unidirectional rotating bezel features a ceramic insert — a detail that dive watch enthusiasts will appreciate for its scratch resistance and deep colour retention. At its heart beats the Longines Caliber L888, based on the ETA A31.L02, running at 25,200 vph with a power reserve of approximately 72 hours. A sapphire crystal with double-sided anti-reflective coating protects the dial. Water resistance is an impressive 300 metres, backed by a screw-in crown and screw-down caseback. The watch is fitted on a stainless steel bracelet with a double-safety folding clasp.

This HydroConquest is from September 2019, is in near-mint condition, and comes as a full set with a movement service completed in July 2026. Includes a one-year warranty.