Longines

Hydroconquest Stainless Steel 39 mm Blue

Reference Number :

L3.780.4.96.6

Series : Conquest

Retail: $1,850

(As of: 05/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Longines. If you are interested in selling this watch to us, you can contact us here.

Quick TakeThis 39mm Hydroconquest is a proper diver's companion that cleans up nice for a night out. That sunray blue dial, paired with the tough ceramic bezel and steel case, just pops. It’s got the guts too – an automatic L888 movement with a hefty 72-hour power reserve, so it’s always ready to go. And don’t worry about taking it for a swim; it’s good down to 30 bar. The sapphire crystal shrugs off scratches, and those luminous hands mean you'll always know the time, even when you're exploring the deep.

DescriptionThe Longines Conquest Hydroconquest, reference L3.780.4.96.6, features a round case constructed from stainless steel, complemented by a ceramic bezel. Its dimensions are a diameter of 39.00 mm, a lug distance of 19 mm, a lug-to-lug measurement of 48.10 mm, and a thickness of 12.20 mm. The timepiece is engineered for aquatic environments, offering water resistance up to 30 bar. This is further supported by a screw-down case back and a screw-in crown. The unidirectional rotating bezel enhances its dive-watch functionality. Protecting the dial is a scratch-resistant sapphire crystal, which incorporates several layers of anti-reflective coating on both its upper and lower surfaces. The total weight of the watch is 166.2 grams.

Internally, this model houses the Caliber L888, an automatic self-winding mechanical movement. This mechanism operates at a frequency of 25'200 vibrations per hour and provides a power reserve of up to 72 hours. The sunray blue dial displays applied Arabic numerals and indexes as hour markers, swept by silvered polished hands. Both the markers and hands are treated with Swiss Super-LumiNova® for enhanced visibility in low-light conditions. The watch indicates hours, minutes, seconds, and the date. The bracelet is also fabricated from stainless steel and is secured with a double safety folding clasp.

GenderMen

SignaturesLongines

Country of OriginSwitzerland

Case Size39 mm

MovementAutomatic

CaliberL888

FunctionsHours, Minutes, Seconds, Date

Power Reserve72 Hours

Case MaterialsStainless Steel

Bezel MaterialsCeramic

Lug MaterialsStainless Steel

Case BackSolid