Introducing the 2021 Longines Hydroconquest in new two-tone configurations

New two-tone variations added to the Longines Hydroconquest family, in 41mm with L888.3 automatic movement.

The HydroConquest is one of Longines' leading collections. The models in this series were thoroughly revamped in 2018. While respecting the classic design codes of diving watches, elements such as the blocky hands and oversized Arabic numerals give the HydroConquest its own character - a neat feat. And with the 2018 revamp, the top-of-the-line variations received a ceramic bezel insert matching the dial color too.

Longines now adds a number of new two-tone variations to the collection, each fitted with a ceramic bezel. The green, black and blue variations are now available in a combination of stainless steel and yellow gold PVD, whilst the grey, black and blue ones are available in stainless steel and rose gold PVD versions. They are available on either a matching two-tone bracelet, or alternatively on a black, blue or green rubber strap.

Regardless of the color, these new Longines HydroConquest two-tone models come in a 41mm case, water resistant up to 300 meters. Inside ticks the self-winding caliber L888.3 with healthy 72-hour power reserve.

The new 2021 Longines HydroConquest two-tone is now available for pre-order in our eBoutique. First examples are expected to come in around March. Full technical details below.

Technical details Longines HydroConquest Two-Tone


  • L3.781.3.06.7/ L3.781.3.06.9
  • L3.781.3.56.7/L3.781.3.56.9
  • L3.781.3.96.7/L3.781.3.96.9
  • L3.781.3.58.7/L3.781.3.58.9
  • L3.781.3.78.7/L3.781.3.78.9
  • L3.781.3.98.7/L3.781.3.98.9


  • Mechanical self-winding movement
  • Calibre L888.3 (ETA A31.L02) 11½ lines, 21 jewels, 25'200 vibrations per hour
  • Power reserve: 72 hours


  • Hours, minutes, seconds and date at 3 o’clock


  • Round, stainless steel and yellow PVD, diameter 41 mm
    • Green, black or blue ceramic bezels insert
  • Round, stainless steel and rose PVD, diameter 41 mm
    • Grey, black or blue ceramic bezels insert
  • Screwed crown and screw-down case back


  • Matt green, sunray grey , sunray black or sunray blue
  • 3 Arabic numerals and 10 cabochons, Super-LumiNova®


  • Yellow or rose PVD, Super-LumiNova®


  • To 30 bar (300 meters)


  • Sapphire crystal with several layers of anti-reflective coating on both sides


  • Stainless steel and yellow or rose PVD, double security folding clasp and integrated diving extension
  • Green, blue, grey, black rubber strap, double security folding clasp and push-piece opening mechanism