Longines has recently given its HydroConquest line a new brilliance by creating sleek models featuring a bezel embellished with a coloured ceramic insert. Today, the brand goes even further in using this exclusive material with a model entirely made from black ceramic whose dial proudly displays its chemical composition: ZrO2. This highly technical and scratch-resistant material is perfectly suited to the sporty look of the new HydroConquest watch. Its boldness is further heightened by the different finishes of each of its components: a matte dial, a polished case, a round satin bezel and a back blending a circular satin and matte finish.

Longines HydroConquest Ref. L3.784.4.56.9
Longines HydroConquest all-black ceramic version

An iconic representation of the sports watches created by Longines, the HydroConquest collection meets the expectations of those who are drawn to the open sea while remaining true to the elegance of the Swiss watchmaker. Preserving the traditional style of diving watches, the new HydroConquest is inspired by the unique requirements of the sport. Its water resistance to 300 metres, unidirectional rotating bezel, screw-in crown and double security folding clasp are all features that emphasize the style of this timepiece.

Inside its 43 mm case, this three-hand and a calendar watch features a self-winding mechanical movement (L888.3) developed exclusively for Longines. The radiant white of its Super-LumiNova coated indexes and hands contrasts with the deep black of its dial. The new HydroConquest comes with a black rubber strap offering precise size adjustment for optimal comfort.

Longines HydroConquest black ceramic version
Longines HydroConquest

Longines HydroConquest

Technical specifications:

Reference: L3.784.4.56.9          


·      Mechanical self-winding movement

·      Calibre L888.3 (ETA A31.L01)

·      111/2 lines, 21 jewels, 25'200 vibrations per hour

·      Power reserve: 64 hours

Functions: Hours, minutes, second and date at 3 o’clock


·      Circular, black ceramic, 43 mm

·      Screwed Crown

Dials: Matt black ceramic, 3 Arabic numerals and 10 cabochons, Super-LumiNova

Hands: Rhodium-plated (hour, minute, second), Super-LumiNova

Water-resistant: 30 bar (300m)

Glass: Sapphire with several layers of anti-reflective coating on both side

Strap: Black rubber, ceramic double security folding clasp with fine-tuning

The price for the Longines HydroConquest Ref. L3.784.4.56.9 is CHF 3,500.

For more information visit Longines Online.